TRẦN NGỌC KHÁNH NHƯ: Toan 8

<h2 style="background-color: white; box-sizing: border-box; font-family: Roboto, sans-serif; font-size: 1.6em; line-height: 1.3; margin-bottom: 0.5em; margin-top: 0px; text-align: center; text-rendering: optimizespeed; width: 663px;">Hoạt động khởi động trang 36 Toán 8 tập 1 CTST</h2><h4 style="background-color: white; box-sizing: border-box; font-family: Roboto, sans-serif; font-size: 1.125em; margin-bottom: 0.5em; margin-top: 0px; text-align: justify; text-rendering: optimizespeed; width: 663px;"></h4>Ô tô <mi>A</mi></math>" id="MathJax-Element-1-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline; float: none; font-size: 16.8px; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><nobr aria-hidden="true" style="border: 0px; box-sizing: border-box; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none 0s ease 0s; vertical-align: 0px;"><span class="math" id="MathJax-Span-1" style="border: 0px; box-sizing: border-box; display: inline-block; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0.929em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; font-size: 20.496px; height: 0px; line-height: normal; margin: 0px; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 0.734em;"><span style="border: 0px; box-sizing: border-box; clip: rect(1.271em, 1000.73em, 2.296em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -2.144em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-2" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-3" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">A<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 2.149em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: solid; border-right-style: initial; border-top-style: initial; border-width: 0px; box-sizing: border-box; display: inline-block; height: 1.015em; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: -0.057em; width: 0px;"><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: inline; height: 1px !important; left: 0px; line-height: normal; margin: 0px; overflow: hidden !important; padding: 0px; position: static; top: 0px; transition: none 0s ease 0s; user-select: none; vertical-align: 0px; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi></mi></math> tiêu tốn <mi>a</mi></math>" id="MathJax-Element-2-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline; float: none; font-size: 16.8px; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><nobr aria-hidden="true" style="border: 0px; box-sizing: border-box; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none 0s ease 0s; vertical-align: 0px;"><span class="math" id="MathJax-Span-4" style="border: 0px; box-sizing: border-box; display: inline-block; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0.685em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; font-size: 20.496px; height: 0px; line-height: normal; margin: 0px; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 0.539em;"><span style="border: 0px; box-sizing: border-box; clip: rect(1.564em, 1000.54em, 2.296em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -2.144em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-5" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-6" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">a<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 2.149em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: solid; border-right-style: initial; border-top-style: initial; border-width: 0px; box-sizing: border-box; display: inline-block; height: 0.658em; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: -0.057em; width: 0px;"><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: inline; height: 1px !important; left: 0px; line-height: normal; margin: 0px; overflow: hidden !important; padding: 0px; position: static; top: 0px; transition: none 0s ease 0s; user-select: none; vertical-align: 0px; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi></mi></math> lít xăng để đi hết quãng đường <mi>x</mi></math>" id="MathJax-Element-3-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline; float: none; font-size: 16.8px; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><nobr aria-hidden="true" style="border: 0px; box-sizing: border-box; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none 0s ease 0s; vertical-align: 0px;"><span class="math" id="MathJax-Span-7" style="border: 0px; box-sizing: border-box; display: inline-block; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0.734em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; font-size: 20.496px; height: 0px; line-height: normal; margin: 0px; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 0.588em;"><span style="border: 0px; box-sizing: border-box; clip: rect(1.564em, 1000.54em, 2.296em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -2.144em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-8" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-9" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">x<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 2.149em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: solid; border-right-style: initial; border-top-style: initial; border-width: 0px; box-sizing: border-box; display: inline-block; height: 0.658em; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: -0.057em; width: 0px;"> (km). Ô tô <mi>B</mi></math>" id="MathJax-Element-4-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline; float: none; font-size: 16.8px; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><nobr aria-hidden="true" style="border: 0px; box-sizing: border-box; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none 0s ease 0s; vertical-align: 0px;"><span class="math" id="MathJax-Span-10" style="border: 0px; box-sizing: border-box; display: inline-block; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0.978em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; font-size: 20.496px; height: 0px; line-height: normal; margin: 0px; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 0.783em;"><span style="border: 0px; box-sizing: border-box; clip: rect(1.32em, 1000.78em, 2.296em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -2.144em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-11" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-12" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">B<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 2.149em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: solid; border-right-style: initial; border-top-style: initial; border-width: 0px; box-sizing: border-box; display: inline-block; height: 0.955em; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: -0.057em; width: 0px;"> tiêu tốn <mi>b</mi></math>" id="MathJax-Element-5-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline; float: none; font-size: 16.8px; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><nobr aria-hidden="true" style="border: 0px; box-sizing: border-box; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none 0s ease 0s; vertical-align: 0px;"><span class="math" id="MathJax-Span-13" style="border: 0px; box-sizing: border-box; display: inline-block; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0.539em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; font-size: 20.496px; height: 0px; line-height: normal; margin: 0px; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 0.442em;"><span style="border: 0px; box-sizing: border-box; clip: rect(1.32em, 1000.44em, 2.296em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -2.144em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-14" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-15" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">b<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 2.149em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: solid; border-right-style: initial; border-top-style: initial; border-width: 0px; box-sizing: border-box; display: inline-block; height: 0.955em; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: -0.057em; width: 0px;"> lít xăng để đi hết quãng đường <mi>y</mi></math>" id="MathJax-Element-6-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline; float: none; font-size: 16.8px; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><nobr aria-hidden="true" style="border: 0px; box-sizing: border-box; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none 0s ease 0s; vertical-align: 0px;"><span class="math" id="MathJax-Span-16" style="border: 0px; box-sizing: border-box; display: inline-block; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0.637em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; font-size: 20.496px; height: 0px; line-height: normal; margin: 0px; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 0.49em;"><span style="border: 0px; box-sizing: border-box; clip: rect(1.564em, 1000.49em, 2.491em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -2.144em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-17" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-18" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">y<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 1px; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0.002em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 2.149em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: solid; border-right-style: initial; border-top-style: initial; border-width: 0px; box-sizing: border-box; display: inline-block; height: 0.896em; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: -0.295em; width: 0px;"> (km). Để đi được <mn>100</mn></math>" id="MathJax-Element-7-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline; float: none; font-size: 16.8px; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><nobr aria-hidden="true" style="border: 0px; box-sizing: border-box; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none 0s ease 0s; vertical-align: 0px;"><span class="math" id="MathJax-Span-19" style="border: 0px; box-sizing: border-box; display: inline-block; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 1.856em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; font-size: 20.496px; height: 0px; line-height: normal; margin: 0px; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 1.515em;"><span style="border: 0px; box-sizing: border-box; clip: rect(1.369em, 1001.47em, 2.344em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -2.193em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-20" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mn" id="MathJax-Span-21" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Main; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">100<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 2.198em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: solid; border-right-style: initial; border-top-style: initial; border-width: 0px; box-sizing: border-box; display: inline-block; height: 0.955em; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: -0.057em; width: 0px;"><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: inline; height: 1px !important; left: 0px; line-height: normal; margin: 0px; overflow: hidden !important; padding: 0px; position: static; top: 0px; transition: none 0s ease 0s; user-select: none; vertical-align: 0px; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mn>100</mn></math> km,a) Mỗi ô tô tiêu tốn bao nhiêu lít xăng?b) Ô tô <mi>A</mi></math>" id="MathJax-Element-8-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline; float: none; font-size: 16.8px; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><nobr aria-hidden="true" style="border: 0px; box-sizing: border-box; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none 0s ease 0s; vertical-align: 0px;"><span class="math" id="MathJax-Span-22" style="border: 0px; box-sizing: border-box; display: inline-block; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0.929em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; font-size: 20.496px; height: 0px; line-height: normal; margin: 0px; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 0.734em;"><span style="border: 0px; box-sizing: border-box; clip: rect(1.271em, 1000.73em, 2.296em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -2.144em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-23" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-24" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">A<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 2.149em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: solid; border-right-style: initial; border-top-style: initial; border-width: 0px; box-sizing: border-box; display: inline-block; height: 1.015em; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: -0.057em; width: 0px;"><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: inline; height: 1px !important; left: 0px; line-height: normal; margin: 0px; overflow: hidden !important; padding: 0px; position: static; top: 0px; transition: none 0s ease 0s; user-select: none; vertical-align: 0px; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi></mi></math> tiêu tốn lượng xăng gấp bao nhiêu lần ô tô <mi>B</mi></math>" id="MathJax-Element-9-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline; float: none; font-size: 16.8px; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><nobr aria-hidden="true" style="border: 0px; box-sizing: border-box; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none 0s ease 0s; vertical-align: 0px;"><span class="math" id="MathJax-Span-25" style="border: 0px; box-sizing: border-box; display: inline-block; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0.978em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; font-size: 20.496px; height: 0px; line-height: normal; margin: 0px; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 0.783em;"><span style="border: 0px; box-sizing: border-box; clip: rect(1.32em, 1000.78em, 2.296em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -2.144em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-26" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-27" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">B<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 2.149em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: solid; border-right-style: initial; border-top-style: initial; border-width: 0px; box-sizing: border-box; display: inline-block; height: 0.955em; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: -0.057em; width: 0px;"><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: inline; height: 1px !important; left: 0px; line-height: normal; margin: 0px; overflow: hidden !important; padding: 0px; position: static; top: 0px; transition: none 0s ease 0s; user-select: none; vertical-align: 0px; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi></mi></math>?<img class="lazy-load-active" data-src="https://giaibaisgk.com/wp-content/uploads/2023/11/khoi-dong-trang-36-toan-8-tap-1.png" decoding="async" src="https://giaibaisgk.com/wp-content/uploads/2023/11/khoi-dong-trang-36-toan-8-tap-1.png" style="border-style: none; box-sizing: border-box; display: inline-block; height: auto; max-width: 100%; opacity: 1; transition: opacity 1s ease 0s; vertical-align: middle;" />Trả lời:Để đi được 1 km thì ô tô <mi>A</mi></math>" id="MathJax-Element-10-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline; float: none; font-size: 16.8px; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><nobr aria-hidden="true" style="border: 0px; box-sizing: border-box; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none 0s ease 0s; vertical-align: 0px;"><span class="math" id="MathJax-Span-28" style="border: 0px; box-sizing: border-box; display: inline-block; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0.929em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; font-size: 20.496px; height: 0px; line-height: normal; margin: 0px; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 0.734em;"><span style="border: 0px; box-sizing: border-box; clip: rect(1.271em, 1000.73em, 2.296em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -2.144em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-29" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-30" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">A<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 2.149em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: solid; border-right-style: initial; border-top-style: initial; border-width: 0px; box-sizing: border-box; display: inline-block; height: 1.015em; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: -0.057em; width: 0px;"> tiêu tốn lượng xăng là: <mstyle displaystyle="true" scriptlevel="0"><mfrac><mi>a</mi><mi>x</mi></mfrac></mstyle></math>" id="MathJax-Element-11-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline; float: none; font-size: 16.8px; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><nobr aria-hidden="true" style="border: 0px; box-sizing: border-box; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none 0s ease 0s; vertical-align: 0px;"><span class="math" id="MathJax-Span-31" style="border: 0px; box-sizing: border-box; display: inline-block; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 1.076em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; font-size: 20.496px; height: 0px; line-height: normal; margin: 0px; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 0.881em;"><span style="border: 0px; box-sizing: border-box; clip: rect(0.881em, 1000.88em, 2.979em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -2.144em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-32" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mstyle" id="MathJax-Span-33" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-34" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mfrac" id="MathJax-Span-35" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px 0.1em; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 0.685em;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.418em, 1000.49em, 4.15em, -999.998em); left: 7.01563px; line-height: normal; margin: 0px 0px 0px -0.242em; padding: 0px; position: absolute; top: -4.681em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-36" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">a<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.418em, 1000.54em, 4.15em, -999.998em); left: 7.01563px; line-height: normal; margin: 0px 0px 0px -0.29em; padding: 0px; position: absolute; top: -3.315em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-37" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">x<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; clip: rect(0.881em, 1000.68em, 1.222em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -1.315em; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: initial; border-right-style: initial; border-top-style: solid; border-width: 1.3px 0px 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0em; width: 0.685em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 1.076em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 2.149em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: solid; border-right-style: initial; border-top-style: initial; border-width: 0px; box-sizing: border-box; display: inline-block; height: 2.324em; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: -0.89em; width: 0px;"><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: inline; height: 1px !important; left: 0px; line-height: normal; margin: 0px; overflow: hidden !important; padding: 0px; position: static; top: 0px; transition: none 0s ease 0s; user-select: none; vertical-align: 0px; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mstyle displaystyle="true" scriptlevel="0"><mfrac><mi></mi><mi></mi></mfrac></mstyle></math> (lít).Để đi được 1 km thì ô tô <mi>B</mi></math>" id="MathJax-Element-12-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline; float: none; font-size: 16.8px; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><nobr aria-hidden="true" style="border: 0px; box-sizing: border-box; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none 0s ease 0s; vertical-align: 0px;"><span class="math" id="MathJax-Span-38" style="border: 0px; box-sizing: border-box; display: inline-block; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0.978em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; font-size: 20.496px; height: 0px; line-height: normal; margin: 0px; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 0.783em;"><span style="border: 0px; box-sizing: border-box; clip: rect(1.32em, 1000.78em, 2.296em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -2.144em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-39" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-40" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">B<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 2.149em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: solid; border-right-style: initial; border-top-style: initial; border-width: 0px; box-sizing: border-box; display: inline-block; height: 0.955em; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: -0.057em; width: 0px;">tiêu tốn lượng xăng là: <mstyle displaystyle="true" scriptlevel="0"><mfrac><mi>b</mi><mi>y</mi></mfrac></mstyle></math>" id="MathJax-Element-13-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline; float: none; font-size: 16.8px; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><nobr aria-hidden="true" style="border: 0px; box-sizing: border-box; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none 0s ease 0s; vertical-align: 0px;"><span class="math" id="MathJax-Span-41" style="border: 0px; box-sizing: border-box; display: inline-block; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 1.027em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; font-size: 20.496px; height: 0px; line-height: normal; margin: 0px; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 0.832em;"><span style="border: 0px; box-sizing: border-box; clip: rect(0.637em, 1000.83em, 3.174em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -2.144em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-42" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mstyle" id="MathJax-Span-43" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-44" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mfrac" id="MathJax-Span-45" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px 0.1em; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 0.637em;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.174em, 1000.44em, 4.15em, -999.998em); left: 6.51563px; line-height: normal; margin: 0px 0px 0px -0.193em; padding: 0px; position: absolute; top: -4.681em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-46" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">b<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.418em, 1000.49em, 4.345em, -999.998em); left: 6.51563px; line-height: normal; margin: 0px 0px 0px -0.242em; padding: 0px; position: absolute; top: -3.315em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-47" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">y<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 1px; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0.002em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; clip: rect(0.881em, 1000.64em, 1.222em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -1.315em; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: initial; border-right-style: initial; border-top-style: solid; border-width: 1.3px 0px 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0em; width: 0.637em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 1.076em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 2.149em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: solid; border-right-style: initial; border-top-style: initial; border-width: 0px; box-sizing: border-box; display: inline-block; height: 2.86em; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: -1.128em; width: 0px;"><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: inline; height: 1px !important; left: 0px; line-height: normal; margin: 0px; overflow: hidden !important; padding: 0px; position: static; top: 0px; transition: none 0s ease 0s; user-select: none; vertical-align: 0px; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mstyle displaystyle="true" scriptlevel="0"><mfrac><mi></mi><mi></mi></mfrac></mstyle></math> (lít).a) Để đi được 100 km thì ô tô <mi>A</mi></math>" id="MathJax-Element-14-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline; float: none; font-size: 16.8px; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><nobr aria-hidden="true" style="border: 0px; box-sizing: border-box; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none 0s ease 0s; vertical-align: 0px;"><span class="math" id="MathJax-Span-48" style="border: 0px; box-sizing: border-box; display: inline-block; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0.929em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; font-size: 20.496px; height: 0px; line-height: normal; margin: 0px; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 0.734em;"><span style="border: 0px; box-sizing: border-box; clip: rect(1.271em, 1000.73em, 2.296em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -2.144em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-49" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-50" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">A<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 2.149em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: solid; border-right-style: initial; border-top-style: initial; border-width: 0px; box-sizing: border-box; display: inline-block; height: 1.015em; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: -0.057em; width: 0px;"><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: inline; height: 1px !important; left: 0px; line-height: normal; margin: 0px; overflow: hidden !important; padding: 0px; position: static; top: 0px; transition: none 0s ease 0s; user-select: none; vertical-align: 0px; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi></mi></math> tiêu tốn lượng xăng là: <mn>100.</mn><mstyle displaystyle="true" scriptlevel="0"><mfrac><mi>a</mi><mi>x</mi></mfrac></mstyle></math>" id="MathJax-Element-15-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline; float: none; font-size: 16.8px; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><nobr aria-hidden="true" style="border: 0px; box-sizing: border-box; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none 0s ease 0s; vertical-align: 0px;"><span class="math" id="MathJax-Span-51" style="border: 0px; box-sizing: border-box; display: inline-block; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 3.271em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; font-size: 20.496px; height: 0px; line-height: normal; margin: 0px; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 2.686em;"><span style="border: 0px; box-sizing: border-box; clip: rect(0.929em, 1002.69em, 3.027em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -2.193em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-52" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mn" id="MathJax-Span-53" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Main; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">100.<span class="mstyle" id="MathJax-Span-54" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-55" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mfrac" id="MathJax-Span-56" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px 0.1em; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 0.685em;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.418em, 1000.49em, 4.15em, -999.998em); left: 7.01563px; line-height: normal; margin: 0px 0px 0px -0.242em; padding: 0px; position: absolute; top: -4.681em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-57" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">a<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.418em, 1000.54em, 4.15em, -999.998em); left: 7.01563px; line-height: normal; margin: 0px 0px 0px -0.29em; padding: 0px; position: absolute; top: -3.315em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-58" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">x<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; clip: rect(0.881em, 1000.68em, 1.222em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -1.315em; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: initial; border-right-style: initial; border-top-style: solid; border-width: 1.3px 0px 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0em; width: 0.685em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 1.076em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 2.198em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: solid; border-right-style: initial; border-top-style: initial; border-width: 0px; box-sizing: border-box; display: inline-block; height: 2.324em; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: -0.89em; width: 0px;"><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: inline; height: 1px !important; left: 0px; line-height: normal; margin: 0px; overflow: hidden !important; padding: 0px; position: static; top: 0px; transition: none 0s ease 0s; user-select: none; vertical-align: 0px; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mn>100.</mn><mstyle displaystyle="true" scriptlevel="0"><mfrac><mi></mi></mfrac></mstyle></math> (lít).Để đi được 100 km thì ô tô <mi>B</mi></math>" id="MathJax-Element-16-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline; float: none; font-size: 16.8px; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><nobr aria-hidden="true" style="border: 0px; box-sizing: border-box; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none 0s ease 0s; vertical-align: 0px;"><span class="math" id="MathJax-Span-59" style="border: 0px; box-sizing: border-box; display: inline-block; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0.978em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; font-size: 20.496px; height: 0px; line-height: normal; margin: 0px; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 0.783em;"><span style="border: 0px; box-sizing: border-box; clip: rect(1.32em, 1000.78em, 2.296em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -2.144em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-60" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-61" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">B<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 2.149em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: solid; border-right-style: initial; border-top-style: initial; border-width: 0px; box-sizing: border-box; display: inline-block; height: 0.955em; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: -0.057em; width: 0px;">tiêu tốn lượng xăng là: <mn>100.</mn><mstyle displaystyle="true" scriptlevel="0"><mfrac><mi>b</mi><mi>y</mi></mfrac></mstyle></math>" id="MathJax-Element-17-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline; float: none; font-size: 16.8px; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><nobr aria-hidden="true" style="border: 0px; box-sizing: border-box; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none 0s ease 0s; vertical-align: 0px;"><span class="math" id="MathJax-Span-62" style="border: 0px; box-sizing: border-box; display: inline-block; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 3.223em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; font-size: 20.496px; height: 0px; line-height: normal; margin: 0px; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 2.637em;"><span style="border: 0px; box-sizing: border-box; clip: rect(0.685em, 1002.64em, 3.223em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -2.193em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-63" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mn" id="MathJax-Span-64" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Main; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">100.<span class="mstyle" id="MathJax-Span-65" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-66" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mfrac" id="MathJax-Span-67" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px 0.1em; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 0.637em;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.174em, 1000.44em, 4.15em, -999.998em); left: 6.51563px; line-height: normal; margin: 0px 0px 0px -0.193em; padding: 0px; position: absolute; top: -4.681em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-68" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">b<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.418em, 1000.49em, 4.345em, -999.998em); left: 6.51563px; line-height: normal; margin: 0px 0px 0px -0.242em; padding: 0px; position: absolute; top: -3.315em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-69" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">y<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 1px; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0.002em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; clip: rect(0.881em, 1000.64em, 1.222em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -1.315em; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: initial; border-right-style: initial; border-top-style: solid; border-width: 1.3px 0px 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0em; width: 0.637em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 1.076em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 2.198em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: solid; border-right-style: initial; border-top-style: initial; border-width: 0px; box-sizing: border-box; display: inline-block; height: 2.86em; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: -1.128em; width: 0px;"><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: inline; height: 1px !important; left: 0px; line-height: normal; margin: 0px; overflow: hidden !important; padding: 0px; position: static; top: 0px; transition: none 0s ease 0s; user-select: none; vertical-align: 0px; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mn>100.</mn><mstyle displaystyle="true" scriptlevel="0"><mfrac><mi></mi><mi></mi></mfrac></mstyle></math> (lít).b) Để đi được 100 km, ô tô <mi>A</mi></math>" id="MathJax-Element-18-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline; float: none; font-size: 16.8px; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><nobr aria-hidden="true" style="border: 0px; box-sizing: border-box; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none 0s ease 0s; vertical-align: 0px;"><span class="math" id="MathJax-Span-70" style="border: 0px; box-sizing: border-box; display: inline-block; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0.929em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; font-size: 20.496px; height: 0px; line-height: normal; margin: 0px; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 0.734em;"><span style="border: 0px; box-sizing: border-box; clip: rect(1.271em, 1000.73em, 2.296em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -2.144em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-71" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-72" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">A<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 2.149em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: solid; border-right-style: initial; border-top-style: initial; border-width: 0px; box-sizing: border-box; display: inline-block; height: 1.015em; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: -0.057em; width: 0px;">tiêu tốn lượng xăng gấp số lần ô tô <mi>B</mi></math>" id="MathJax-Element-19-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline; float: none; font-size: 16.8px; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><nobr aria-hidden="true" style="border: 0px; box-sizing: border-box; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none 0s ease 0s; vertical-align: 0px;"><span class="math" id="MathJax-Span-73" style="border: 0px; box-sizing: border-box; display: inline-block; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0.978em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; font-size: 20.496px; height: 0px; line-height: normal; margin: 0px; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 0.783em;"><span style="border: 0px; box-sizing: border-box; clip: rect(1.32em, 1000.78em, 2.296em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -2.144em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-74" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-75" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">B<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 2.149em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: solid; border-right-style: initial; border-top-style: initial; border-width: 0px; box-sizing: border-box; display: inline-block; height: 0.955em; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: -0.057em; width: 0px;"><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: inline; height: 1px !important; left: 0px; line-height: normal; margin: 0px; overflow: hidden !important; padding: 0px; position: static; top: 0px; transition: none 0s ease 0s; user-select: none; vertical-align: 0px; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi></mi></math> là:<div class="giaib-qc-adsense" id="giaib-42906419" style="background-color: white; box-sizing: border-box; font-family: Roboto, sans-serif; font-size: 16.8px; margin: 1px auto; text-align: center;"><ins class="adsbygoogle" data-ad-client="ca-pub-3633742593960897" data-ad-format="auto" data-ad-slot="4413821640" data-full-width-responsive="true" style="box-sizing: border-box; display: block; text-decoration-line: none;"></ins></div><mstyle displaystyle="true" scriptlevel="0"><mfrac><mrow><mn>100</mn><mi>a</mi></mrow><mi>x</mi></mfrac></mstyle><mo>:</mo><mstyle displaystyle="true" scriptlevel="0"><mfrac><mrow><mn>100</mn><mi>b</mi></mrow><mi>y</mi></mfrac></mstyle><mo>=</mo><mstyle displaystyle="true" scriptlevel="0"><mfrac><mrow><mn>100</mn><mi>a</mi></mrow><mi>x</mi></mfrac></mstyle><mo>.</mo><mstyle displaystyle="true" scriptlevel="0"><mfrac><mi>y</mi><mrow><mn>100</mn><mi>b</mi></mrow></mfrac></mstyle><mo>=</mo><mstyle displaystyle="true" scriptlevel="0"><mfrac><mrow><mi>a</mi><mi>y</mi></mrow><mi>b</mi></mfrac></mstyle><mrow class="MJX-TeXAtom-ORD"><mi>x</mi></mrow></math>" id="MathJax-Element-20-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline; float: none; font-size: 16.8px; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><nobr aria-hidden="true" style="border: 0px; box-sizing: border-box; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none 0s ease 0s; vertical-align: 0px;"><span class="math" id="MathJax-Span-76" style="border: 0px; box-sizing: border-box; display: inline-block; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 18.494em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; font-size: 20.496px; height: 0px; line-height: normal; margin: 0px; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 15.127em;"><span style="border: 0px; box-sizing: border-box; clip: rect(0.685em, 1015.08em, 3.223em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -2.193em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-77" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mstyle" id="MathJax-Span-78" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-79" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mfrac" id="MathJax-Span-80" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px 0.1em; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 2.149em;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.174em, 1002em, 4.15em, -999.998em); left: 22.0156px; line-height: normal; margin: 0px 0px 0px -1.022em; padding: 0px; position: absolute; top: -4.681em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-81" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mn" id="MathJax-Span-82" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Main; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">100<span class="mi" id="MathJax-Span-83" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">a<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.418em, 1000.54em, 4.15em, -999.998em); left: 22.0156px; line-height: normal; margin: 0px 0px 0px -0.29em; padding: 0px; position: absolute; top: -3.315em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-84" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">x<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; clip: rect(0.881em, 1002.15em, 1.222em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -1.315em; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: initial; border-right-style: initial; border-top-style: solid; border-width: 1.3px 0px 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0em; width: 2.149em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 1.076em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span class="mo" id="MathJax-Span-85" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Main; line-height: normal; margin: 0px; padding: 0px 0px 0px 0.295em; position: static; transition: none 0s ease 0s; vertical-align: 0px;">:<span class="mstyle" id="MathJax-Span-86" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px 0px 0px 0.295em; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-87" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mfrac" id="MathJax-Span-88" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px 0.1em; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 2.052em;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.174em, 1001.9em, 4.15em, -999.998em); left: 21.0156px; line-height: normal; margin: 0px 0px 0px -0.973em; padding: 0px; position: absolute; top: -4.681em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-89" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mn" id="MathJax-Span-90" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Main; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">100<span class="mi" id="MathJax-Span-91" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">b<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.418em, 1000.49em, 4.345em, -999.998em); left: 21.0156px; line-height: normal; margin: 0px 0px 0px -0.242em; padding: 0px; position: absolute; top: -3.315em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-92" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">y<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 1px; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0.002em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; clip: rect(0.881em, 1002.05em, 1.222em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -1.315em; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: initial; border-right-style: initial; border-top-style: solid; border-width: 1.3px 0px 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0em; width: 2.052em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 1.076em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span class="mo" id="MathJax-Span-93" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Main; line-height: normal; margin: 0px; padding: 0px 0px 0px 0.295em; position: static; transition: none 0s ease 0s; vertical-align: 0px;">=<span class="mstyle" id="MathJax-Span-94" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px 0px 0px 0.295em; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-95" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mfrac" id="MathJax-Span-96" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px 0.1em; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 2.149em;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.174em, 1002em, 4.15em, -999.998em); left: 22.0156px; line-height: normal; margin: 0px 0px 0px -1.022em; padding: 0px; position: absolute; top: -4.681em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-97" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mn" id="MathJax-Span-98" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Main; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">100<span class="mi" id="MathJax-Span-99" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">a<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.418em, 1000.54em, 4.15em, -999.998em); left: 22.0156px; line-height: normal; margin: 0px 0px 0px -0.29em; padding: 0px; position: absolute; top: -3.315em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-100" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">x<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; clip: rect(0.881em, 1002.15em, 1.222em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -1.315em; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: initial; border-right-style: initial; border-top-style: solid; border-width: 1.3px 0px 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0em; width: 2.149em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 1.076em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span class="mo" id="MathJax-Span-101" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Main; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">.<span class="mstyle" id="MathJax-Span-102" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px 0px 0px 0.149em; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-103" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mfrac" id="MathJax-Span-104" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px 0.1em; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 2.052em;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.418em, 1000.49em, 4.345em, -999.998em); left: 21.0156px; line-height: normal; margin: 0px 0px 0px -0.242em; padding: 0px; position: absolute; top: -4.681em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-105" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">y<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 1px; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0.002em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.174em, 1001.9em, 4.15em, -999.998em); left: 21.0156px; line-height: normal; margin: 0px 0px 0px -0.973em; padding: 0px; position: absolute; top: -3.315em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-106" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mn" id="MathJax-Span-107" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Main; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">100<span class="mi" id="MathJax-Span-108" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">b<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; clip: rect(0.881em, 1002.05em, 1.222em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -1.315em; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: initial; border-right-style: initial; border-top-style: solid; border-width: 1.3px 0px 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0em; width: 2.052em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 1.076em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span class="mo" id="MathJax-Span-109" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Main; line-height: normal; margin: 0px; padding: 0px 0px 0px 0.295em; position: static; transition: none 0s ease 0s; vertical-align: 0px;">=<span class="mstyle" id="MathJax-Span-110" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px 0px 0px 0.295em; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-111" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mfrac" id="MathJax-Span-112" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px 0.1em; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 1.125em;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.418em, 1001.03em, 4.345em, -999.998em); left: 11.5156px; line-height: normal; margin: 0px 0px 0px -0.534em; padding: 0px; position: absolute; top: -4.681em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-113" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-114" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">a<span class="mi" id="MathJax-Span-115" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">y<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 1px; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0.002em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.174em, 1000.44em, 4.15em, -999.998em); left: 11.5156px; line-height: normal; margin: 0px 0px 0px -0.193em; padding: 0px; position: absolute; top: -3.315em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-116" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">b<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; clip: rect(0.881em, 1001.13em, 1.222em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -1.315em; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: initial; border-right-style: initial; border-top-style: solid; border-width: 1.3px 0px 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0em; width: 1.125em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 1.076em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span class="texatom" id="MathJax-Span-117" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-118" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-119" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">x<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 2.198em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"> (lần)Vậy ô tô <mi>A</mi></math>" id="MathJax-Element-21-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline; float: none; font-size: 16.8px; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><nobr aria-hidden="true" style="border: 0px; box-sizing: border-box; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none 0s ease 0s; vertical-align: 0px;"><span class="math" id="MathJax-Span-120" style="border: 0px; box-sizing: border-box; display: inline-block; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0.929em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; font-size: 20.496px; height: 0px; line-height: normal; margin: 0px; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 0.734em;"><span style="border: 0px; box-sizing: border-box; clip: rect(1.271em, 1000.73em, 2.296em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -2.144em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-121" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-122" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">A<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 2.149em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: solid; border-right-style: initial; border-top-style: initial; border-width: 0px; box-sizing: border-box; display: inline-block; height: 1.015em; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: -0.057em; width: 0px;">tốn lượng xăng gấp <mstyle displaystyle="true" scriptlevel="0"><mfrac><mrow><mi>a</mi><mi>y</mi></mrow><mi>b</mi></mfrac></mstyle><mrow class="MJX-TeXAtom-ORD"><mi>x</mi></mrow></math>" id="MathJax-Element-22-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline; float: none; font-size: 16.8px; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><nobr aria-hidden="true" style="border: 0px; box-sizing: border-box; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none 0s ease 0s; vertical-align: 0px;"><span class="math" id="MathJax-Span-123" style="border: 0px; box-sizing: border-box; display: inline-block; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 2.344em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; font-size: 20.496px; height: 0px; line-height: normal; margin: 0px; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 1.905em;"><span style="border: 0px; box-sizing: border-box; clip: rect(0.881em, 1001.86em, 2.979em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -2.144em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-124" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mstyle" id="MathJax-Span-125" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-126" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mfrac" id="MathJax-Span-127" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px 0.1em; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 1.125em;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.418em, 1001.03em, 4.345em, -999.998em); left: 11.5156px; line-height: normal; margin: 0px 0px 0px -0.534em; padding: 0px; position: absolute; top: -4.681em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-128" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-129" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">a<span class="mi" id="MathJax-Span-130" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">y<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 1px; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0.002em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.174em, 1000.44em, 4.15em, -999.998em); left: 11.5156px; line-height: normal; margin: 0px 0px 0px -0.193em; padding: 0px; position: absolute; top: -3.315em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-131" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">b<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; clip: rect(0.881em, 1001.13em, 1.222em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -1.315em; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: initial; border-right-style: initial; border-top-style: solid; border-width: 1.3px 0px 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0em; width: 1.125em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 1.076em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span class="texatom" id="MathJax-Span-132" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-133" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-134" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">x <span style="border: 0px; box-sizing: border-box; display: inline-block; height: 2.149em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: solid; border-right-style: initial; border-top-style: initial; border-width: 0px; box-sizing: border-box; display: inline-block; height: 2.324em; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: -0.89em; width: 0px;">lần ô tô <mi>B</mi></math>" id="MathJax-Element-23-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline; float: none; font-size: 16.8px; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><nobr aria-hidden="true" style="border: 0px; box-sizing: border-box; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none 0s ease 0s; vertical-align: 0px;"><span class="math" id="MathJax-Span-135" style="border: 0px; box-sizing: border-box; display: inline-block; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0.978em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; font-size: 20.496px; height: 0px; line-height: normal; margin: 0px; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 0.783em;"><span style="border: 0px; box-sizing: border-box; clip: rect(1.32em, 1000.78em, 2.296em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -2.144em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-136" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-137" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">B<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 2.149em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: solid; border-right-style: initial; border-top-style: initial; border-width: 0px; box-sizing: border-box; display: inline-block; height: 0.955em; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: -0.057em; width: 0px;"><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: inline; height: 1px !important; left: 0px; line-height: normal; margin: 0px; overflow: hidden !important; padding: 0px; position: static; top: 0px; transition: none 0s ease 0s; user-select: none; vertical-align: 0px; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi></mi></math>.<hr style="background-color: white; border-bottom-width: 0px; border-left-width: 0px; border-right-width: 0px; border-top-color: initial; border-top-style: solid; box-sizing: border-box; font-family: Roboto, sans-serif; font-size: 16.8px; margin: 15px 0px; opacity: 0.1; text-align: justify;" /><h3 style="background-color: white; box-sizing: border-box; font-family: Roboto, sans-serif; font-size: 1.25em; margin-bottom: 0.5em; margin-top: 0px; text-align: justify; text-rendering: optimizespeed; width: 663px;">1. NHÂN HAI PHÂN THỨC</h3><h4 style="background-color: white; box-sizing: border-box; font-family: Roboto, sans-serif; font-size: 1.125em; margin-bottom: 0.5em; margin-top: 0px; text-align: justify; text-rendering: optimizespeed; width: 663px;">Hoạt động khám phá 1 trang 36 Toán 8 tập 1 CTST</h4>Một tấm bạt lớn hình chữ nhật có chiều dài <mi>a</mi></math>" id="MathJax-Element-24-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline; float: none; font-size: 16.8px; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><nobr aria-hidden="true" style="border: 0px; box-sizing: border-box; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none 0s ease 0s; vertical-align: 0px;"><span class="math" id="MathJax-Span-138" style="border: 0px; box-sizing: border-box; display: inline-block; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0.685em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; font-size: 20.496px; height: 0px; line-height: normal; margin: 0px; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 0.539em;"><span style="border: 0px; box-sizing: border-box; clip: rect(1.564em, 1000.54em, 2.296em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -2.144em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-139" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-140" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">a<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 2.149em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: solid; border-right-style: initial; border-top-style: initial; border-width: 0px; box-sizing: border-box; display: inline-block; height: 0.658em; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: -0.057em; width: 0px;"> (m), chiều rộng <mi>b</mi></math>" id="MathJax-Element-25-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline; float: none; font-size: 16.8px; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><nobr aria-hidden="true" style="border: 0px; box-sizing: border-box; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none 0s ease 0s; vertical-align: 0px;"><span class="math" id="MathJax-Span-141" style="border: 0px; box-sizing: border-box; display: inline-block; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0.539em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; font-size: 20.496px; height: 0px; line-height: normal; margin: 0px; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 0.442em;"><span style="border: 0px; box-sizing: border-box; clip: rect(1.32em, 1000.44em, 2.296em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -2.144em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-142" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-143" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">b(m) được ghép bởi các tấm bạt bé hình chữ nhật có chiều dài và chiều rộng đều bằng <mstyle displaystyle="true" scriptlevel="0"><mfrac><mn>1</mn><mi>k</mi></mfrac></mstyle></math>" id="MathJax-Element-26-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline; float: none; font-size: 16.8px; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><nobr aria-hidden="true" style="border: 0px; box-sizing: border-box; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none 0s ease 0s; vertical-align: 0px;"><span class="math" id="MathJax-Span-144" style="border: 0px; box-sizing: border-box; display: inline-block; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 1.027em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; font-size: 20.496px; height: 0px; line-height: normal; margin: 0px; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 0.832em;"><span style="border: 0px; box-sizing: border-box; clip: rect(0.637em, 1000.83em, 2.979em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -2.144em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-145" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mstyle" id="MathJax-Span-146" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-147" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mfrac" id="MathJax-Span-148" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px 0.1em; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 0.637em;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.174em, 1000.44em, 4.15em, -999.998em); left: 6.51563px; line-height: normal; margin: 0px 0px 0px -0.242em; padding: 0px; position: absolute; top: -4.681em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mn" id="MathJax-Span-149" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Main; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">1<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.174em, 1000.49em, 4.15em, -999.998em); left: 6.51563px; line-height: normal; margin: 0px 0px 0px -0.242em; padding: 0px; position: absolute; top: -3.315em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-150" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">k<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; clip: rect(0.881em, 1000.64em, 1.222em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -1.315em; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: initial; border-right-style: initial; border-top-style: solid; border-width: 1.3px 0px 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0em; width: 0.637em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 1.076em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 2.149em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: solid; border-right-style: initial; border-top-style: initial; border-width: 0px; box-sizing: border-box; display: inline-block; height: 2.622em; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: -0.89em; width: 0px;">chiều dài, chiều rộng của tấm bạt lớn. Tính diện tích của mỗi tấm bạt bé theo <mi>a</mi></math>" id="MathJax-Element-27-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline; float: none; font-size: 16.8px; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><nobr aria-hidden="true" style="border: 0px; box-sizing: border-box; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none 0s ease 0s; vertical-align: 0px;"><span class="math" id="MathJax-Span-151" style="border: 0px; box-sizing: border-box; display: inline-block; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0.685em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; font-size: 20.496px; height: 0px; line-height: normal; margin: 0px; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 0.539em;"><span style="border: 0px; box-sizing: border-box; clip: rect(1.564em, 1000.54em, 2.296em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -2.144em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-152" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-153" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">a<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 2.149em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: solid; border-right-style: initial; border-top-style: initial; border-width: 0px; box-sizing: border-box; display: inline-block; height: 0.658em; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: -0.057em; width: 0px;"><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: inline; height: 1px !important; left: 0px; line-height: normal; margin: 0px; overflow: hidden !important; padding: 0px; position: static; top: 0px; transition: none 0s ease 0s; user-select: none; vertical-align: 0px; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi></mi></math>, <mi>b</mi></math>" id="MathJax-Element-28-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline; float: none; font-size: 16.8px; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><nobr aria-hidden="true" style="border: 0px; box-sizing: border-box; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none 0s ease 0s; vertical-align: 0px;"><span class="math" id="MathJax-Span-154" style="border: 0px; box-sizing: border-box; display: inline-block; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0.539em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; font-size: 20.496px; height: 0px; line-height: normal; margin: 0px; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 0.442em;"><span style="border: 0px; box-sizing: border-box; clip: rect(1.32em, 1000.44em, 2.296em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -2.144em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-155" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-156" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">b<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 2.149em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: solid; border-right-style: initial; border-top-style: initial; border-width: 0px; box-sizing: border-box; display: inline-block; height: 0.955em; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: -0.057em; width: 0px;"><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: inline; height: 1px !important; left: 0px; line-height: normal; margin: 0px; overflow: hidden !important; padding: 0px; position: static; top: 0px; transition: none 0s ease 0s; user-select: none; vertical-align: 0px; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi></mi></math> và <mi>k</mi></math>" id="MathJax-Element-29-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline; float: none; font-size: 16.8px; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><nobr aria-hidden="true" style="border: 0px; box-sizing: border-box; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none 0s ease 0s; vertical-align: 0px;"><span class="math" id="MathJax-Span-157" style="border: 0px; box-sizing: border-box; display: inline-block; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0.685em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; font-size: 20.496px; height: 0px; line-height: normal; margin: 0px; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 0.539em;"><span style="border: 0px; box-sizing: border-box; clip: rect(1.32em, 1000.54em, 2.296em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -2.144em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-158" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-159" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">k<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 2.149em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: solid; border-right-style: initial; border-top-style: initial; border-width: 0px; box-sizing: border-box; display: inline-block; height: 0.955em; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: -0.057em; width: 0px;"><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: inline; height: 1px !important; left: 0px; line-height: normal; margin: 0px; overflow: hidden !important; padding: 0px; position: static; top: 0px; transition: none 0s ease 0s; user-select: none; vertical-align: 0px; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi></mi></math>.<img class="lazy-load-active" data-src="https://giaibaisgk.com/wp-content/uploads/2023/11/kham-pha-1-trang-36-toan-8-tap-1.png" decoding="async" height="146" src="https://giaibaisgk.com/wp-content/uploads/2023/11/kham-pha-1-trang-36-toan-8-tap-1.png" style="border-style: none; box-sizing: border-box; display: inline-block; height: auto; max-width: 100%; opacity: 1; transition: opacity 1s ease 0s; vertical-align: middle;" width="301" />Trả lời:Chiều dài tấm bạt bé là: <mi>a</mi><mo>.</mo><mstyle displaystyle="true" scriptlevel="0"><mfrac><mn>1</mn><mi>k</mi></mfrac></mstyle><mo>=</mo><mstyle displaystyle="true" scriptlevel="0"><mfrac><mi>a</mi><mi>k</mi></mfrac></mstyle></math>" id="MathJax-Element-30-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline; float: none; font-size: 16.8px; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><nobr aria-hidden="true" style="border: 0px; box-sizing: border-box; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none 0s ease 0s; vertical-align: 0px;"><span class="math" id="MathJax-Span-160" style="border: 0px; box-sizing: border-box; display: inline-block; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 4.881em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; font-size: 20.496px; height: 0px; line-height: normal; margin: 0px; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 4.003em;"><span style="border: 0px; box-sizing: border-box; clip: rect(0.685em, 1004em, 3.027em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -2.193em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-161" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-162" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">a<span class="mo" id="MathJax-Span-163" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Main; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">.<span class="mstyle" id="MathJax-Span-164" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px 0px 0px 0.149em; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-165" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mfrac" id="MathJax-Span-166" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px 0.1em; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 0.637em;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.174em, 1000.44em, 4.15em, -999.998em); left: 6.51563px; line-height: normal; margin: 0px 0px 0px -0.242em; padding: 0px; position: absolute; top: -4.681em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mn" id="MathJax-Span-167" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Main; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">1<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.174em, 1000.49em, 4.15em, -999.998em); left: 6.51563px; line-height: normal; margin: 0px 0px 0px -0.242em; padding: 0px; position: absolute; top: -3.315em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-168" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">k<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; clip: rect(0.881em, 1000.64em, 1.222em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -1.315em; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: initial; border-right-style: initial; border-top-style: solid; border-width: 1.3px 0px 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0em; width: 0.637em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 1.076em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span class="mo" id="MathJax-Span-169" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Main; line-height: normal; margin: 0px; padding: 0px 0px 0px 0.295em; position: static; transition: none 0s ease 0s; vertical-align: 0px;">=<span class="mstyle" id="MathJax-Span-170" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px 0px 0px 0.295em; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-171" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mfrac" id="MathJax-Span-172" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px 0.1em; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 0.637em;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.418em, 1000.49em, 4.15em, -999.998em); left: 6.51563px; line-height: normal; margin: 0px 0px 0px -0.242em; padding: 0px; position: absolute; top: -4.681em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-173" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">a<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.174em, 1000.49em, 4.15em, -999.998em); left: 6.51563px; line-height: normal; margin: 0px 0px 0px -0.242em; padding: 0px; position: absolute; top: -3.315em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-174" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">k<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; clip: rect(0.881em, 1000.64em, 1.222em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -1.315em; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: initial; border-right-style: initial; border-top-style: solid; border-width: 1.3px 0px 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0em; width: 0.637em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 1.076em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 2.198em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: solid; border-right-style: initial; border-top-style: initial; border-width: 0px; box-sizing: border-box; display: inline-block; height: 2.622em; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: -0.89em; width: 0px;"><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: inline; height: 1px !important; left: 0px; line-height: normal; margin: 0px; overflow: hidden !important; padding: 0px; position: static; top: 0px; transition: none 0s ease 0s; user-select: none; vertical-align: 0px; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi></mi></math> (m)Chiều rộn tấm bạt bé là: <mi>b</mi><mo>.</mo><mstyle displaystyle="true" scriptlevel="0"><mfrac><mn>1</mn><mi>k</mi></mfrac></mstyle><mo>=</mo><mstyle displaystyle="true" scriptlevel="0"><mfrac><mi>b</mi><mi>k</mi></mfrac></mstyle></math>" id="MathJax-Element-31-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline; float: none; font-size: 16.8px; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><nobr aria-hidden="true" style="border: 0px; box-sizing: border-box; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none 0s ease 0s; vertical-align: 0px;"><span class="math" id="MathJax-Span-175" style="border: 0px; box-sizing: border-box; display: inline-block; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 4.784em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; font-size: 20.496px; height: 0px; line-height: normal; margin: 0px; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 3.906em;"><span style="border: 0px; box-sizing: border-box; clip: rect(0.685em, 1003.91em, 3.027em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -2.193em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-176" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-177" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">b<span class="mo" id="MathJax-Span-178" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Main; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">.<span class="mstyle" id="MathJax-Span-179" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px 0px 0px 0.149em; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-180" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mfrac" id="MathJax-Span-181" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px 0.1em; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 0.637em;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.174em, 1000.44em, 4.15em, -999.998em); left: 6.51563px; line-height: normal; margin: 0px 0px 0px -0.242em; padding: 0px; position: absolute; top: -4.681em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mn" id="MathJax-Span-182" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Main; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">1<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.174em, 1000.49em, 4.15em, -999.998em); left: 6.51563px; line-height: normal; margin: 0px 0px 0px -0.242em; padding: 0px; position: absolute; top: -3.315em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-183" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">k<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; clip: rect(0.881em, 1000.64em, 1.222em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -1.315em; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: initial; border-right-style: initial; border-top-style: solid; border-width: 1.3px 0px 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0em; width: 0.637em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 1.076em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span class="mo" id="MathJax-Span-184" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Main; line-height: normal; margin: 0px; padding: 0px 0px 0px 0.295em; position: static; transition: none 0s ease 0s; vertical-align: 0px;">=<span class="mstyle" id="MathJax-Span-185" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px 0px 0px 0.295em; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-186" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mfrac" id="MathJax-Span-187" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px 0.1em; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 0.637em;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.174em, 1000.44em, 4.15em, -999.998em); left: 6.51563px; line-height: normal; margin: 0px 0px 0px -0.193em; padding: 0px; position: absolute; top: -4.681em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-188" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">b<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.174em, 1000.49em, 4.15em, -999.998em); left: 6.51563px; line-height: normal; margin: 0px 0px 0px -0.242em; padding: 0px; position: absolute; top: -3.315em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-189" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">k<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; clip: rect(0.881em, 1000.64em, 1.222em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -1.315em; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: initial; border-right-style: initial; border-top-style: solid; border-width: 1.3px 0px 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0em; width: 0.637em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 1.076em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 2.198em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: solid; border-right-style: initial; border-top-style: initial; border-width: 0px; box-sizing: border-box; display: inline-block; height: 2.622em; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: -0.89em; width: 0px;">(m)Diện tích của mỗi tấm bạt bé là:<mstyle displaystyle="true" scriptlevel="0"><mfrac><mi>a</mi><mi>k</mi></mfrac></mstyle><mo>&#x22C5;</mo><mstyle displaystyle="true" scriptlevel="0"><mfrac><mi>b</mi><mi>k</mi></mfrac></mstyle><mo>=</mo><mstyle displaystyle="true" scriptlevel="0"><mfrac><mrow class="MJX-TeXAtom-ORD"><mi>a</mi><mi>b</mi></mrow><mrow class="MJX-TeXAtom-ORD"><mrow class="MJX-TeXAtom-ORD"><msup><mi>k</mi><mn>2</mn></msup></mrow></mrow></mfrac></mstyle></math>" id="MathJax-Element-32-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline; float: none; font-size: 16.8px; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><nobr aria-hidden="true" style="border: 0px; box-sizing: border-box; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none 0s ease 0s; vertical-align: 0px;"><span class="math" id="MathJax-Span-190" style="border: 0px; box-sizing: border-box; display: inline-block; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 6.199em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; font-size: 20.496px; height: 0px; line-height: normal; margin: 0px; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 5.077em;"><span style="border: 0px; box-sizing: border-box; clip: rect(0.685em, 1005.08em, 3.076em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -2.193em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-191" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mstyle" id="MathJax-Span-192" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-193" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mfrac" id="MathJax-Span-194" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px 0.1em; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 0.637em;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.418em, 1000.49em, 4.15em, -999.998em); left: 6.51563px; line-height: normal; margin: 0px 0px 0px -0.242em; padding: 0px; position: absolute; top: -4.681em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-195" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">a<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.174em, 1000.49em, 4.15em, -999.998em); left: 6.51563px; line-height: normal; margin: 0px 0px 0px -0.242em; padding: 0px; position: absolute; top: -3.315em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-196" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">k<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; clip: rect(0.881em, 1000.64em, 1.222em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -1.315em; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: initial; border-right-style: initial; border-top-style: solid; border-width: 1.3px 0px 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0em; width: 0.637em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 1.076em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span class="mo" id="MathJax-Span-197" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Main; line-height: normal; margin: 0px; padding: 0px 0px 0px 0.246em; position: static; transition: none 0s ease 0s; vertical-align: 0px;">⋅<span class="mstyle" id="MathJax-Span-198" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px 0px 0px 0.246em; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-199" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mfrac" id="MathJax-Span-200" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px 0.1em; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 0.637em;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.174em, 1000.44em, 4.15em, -999.998em); left: 6.51563px; line-height: normal; margin: 0px 0px 0px -0.193em; padding: 0px; position: absolute; top: -4.681em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-201" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">b<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.174em, 1000.49em, 4.15em, -999.998em); left: 6.51563px; line-height: normal; margin: 0px 0px 0px -0.242em; padding: 0px; position: absolute; top: -3.315em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-202" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">k<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; clip: rect(0.881em, 1000.64em, 1.222em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -1.315em; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: initial; border-right-style: initial; border-top-style: solid; border-width: 1.3px 0px 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0em; width: 0.637em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 1.076em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span class="mo" id="MathJax-Span-203" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Main; line-height: normal; margin: 0px; padding: 0px 0px 0px 0.295em; position: static; transition: none 0s ease 0s; vertical-align: 0px;">=<span class="mstyle" id="MathJax-Span-204" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px 0px 0px 0.295em; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-205" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mfrac" id="MathJax-Span-206" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px 0.1em; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 1.076em;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.174em, 1000.93em, 4.15em, -999.998em); left: 11.0156px; line-height: normal; margin: 0px 0px 0px -0.485em; padding: 0px; position: absolute; top: -4.681em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="texatom" id="MathJax-Span-207" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-208" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-209" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">a<span class="mi" id="MathJax-Span-210" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">b<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.076em, 1000.93em, 4.15em, -999.998em); left: 11.0156px; line-height: normal; margin: 0px 0px 0px -0.485em; padding: 0px; position: absolute; top: -3.266em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="texatom" id="MathJax-Span-211" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-212" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="texatom" id="MathJax-Span-213" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-214" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="msubsup" id="MathJax-Span-215" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 0.929em;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.174em, 1000.49em, 4.15em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -3.998em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-216" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">k<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span class="mn" id="MathJax-Span-217" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Main; font-size: 14.4907px; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">2<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; clip: rect(0.881em, 1001.08em, 1.222em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -1.315em; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: initial; border-right-style: initial; border-top-style: solid; border-width: 1.3px 0px 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0em; width: 1.076em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 1.076em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 2.198em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: solid; border-right-style: initial; border-top-style: initial; border-width: 0px; box-sizing: border-box; display: inline-block; height: 2.682em; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: -0.949em; width: 0px;">(<mrow class="MJX-TeXAtom-ORD"><msup><mi>m</mi><mn>2</mn></msup></mrow></math>" id="MathJax-Element-33-Frame" role="presentation" style="border: 0px; box-sizing: border-box; direction: ltr; display: inline; float: none; font-size: 16.8px; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; overflow-wrap: normal; padding: 0px; position: relative; text-align: left; white-space: nowrap; word-spacing: normal;" tabindex="0"><nobr aria-hidden="true" style="border: 0px; box-sizing: border-box; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none 0s ease 0s; vertical-align: 0px;"><span class="math" id="MathJax-Span-218" style="border: 0px; box-sizing: border-box; display: inline-block; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 1.613em;"><span style="border: 0px; box-sizing: border-box; display: inline-block; font-size: 20.496px; height: 0px; line-height: normal; margin: 0px; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 1.32em;"><span style="border: 0px; box-sizing: border-box; clip: rect(1.173em, 1001.32em, 2.296em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -2.144em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-219" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="texatom" id="MathJax-Span-220" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-221" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span class="msubsup" id="MathJax-Span-222" style="border: 0px; box-sizing: border-box; display: inline; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 0px; line-height: normal; margin: 0px; padding: 0px; position: relative; transition: none 0s ease 0s; vertical-align: 0px; width: 1.32em;"><span style="border: 0px; box-sizing: border-box; clip: rect(3.418em, 1000.88em, 4.15em, -999.998em); left: 0em; line-height: normal; margin: 0px; padding: 0px; position: absolute; top: -3.998em; transition: none 0s ease 0s; vertical-align: 0px;"><span class="mi" id="MathJax-Span-223" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Math-italic; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">m<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span class="mn" id="MathJax-Span-224" style="border: 0px; box-sizing: border-box; display: inline; font-family: MathJax_Main; font-size: 14.4907px; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px;">2<span style="border: 0px; box-sizing: border-box; display: inline-block; height: 4.003em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border: 0px; box-sizing: border-box; display: inline-block; height: 2.149em; line-height: normal; margin: 0px; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: 0px; width: 0px;"><span style="border-bottom-style: initial; border-color: initial; border-image: initial; border-left-style: solid; border-right-style: initial; border-top-style: initial; border-width: 0px; box-sizing: border-box; display: inline-block; height: 1.134em; line-height: normal; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none 0s ease 0s; vertical-align: -0.057em; width: 0px;"><span class="MJX_Assistive_MathML" role="presentation" style="border: 0px; box-sizing: border-box; clip: rect(1px, 1px, 1px, 1px); display: inline; height: 1px !important; left: 0px; line-height: normal; margin: 0px; overflow: hidden !important; padding: 0px; position: static; top: 0px; transition: none 0s ease 0s; user-select: none; vertical-align: 0px; width: 1px !important;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mrow class="MJX-TeXAtom-ORD"><msup><mi></mi></msup></mrow></math>)

BÀI 7. NHÂN, CHIA PHÂN THỨC

Hoạt động khởi động trang 36 Toán 8 tập 1 CTST Ô tô A tiêu tốn a lít xăng để đi hết quãng đường x (km). Ô tô B tiêu tốn b lít xă...

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