Tìm x: <span class="MathJax_Preview" style="color: inherit; display: none;"></span><span id="MathJax-Element-1-Frame" class="mjx-chtml MathJax_CHTML" tabindex="0" data-mathml="<math xmlns="http://www.w3.org/1998/Math/MathML"><mstyle mathsize="1.44em"><mrow class="MJX-TeXAtom-ORD"><mfrac><mn>29</mn><mn>7</mn></mfrac></mrow><mo>−</mo><mi>x</mi><mo>=</mo><mrow class="MJX-TeXAtom-ORD"><mfrac><mn>3</mn><mn>2</mn></mfrac></mrow></mstyle></math>" role="presentation" style="font-size: 127%; position: relative;"><span id="MJXc-Node-1" class="mjx-math" aria-hidden="true"><span id="MJXc-Node-2" class="mjx-mrow"><span id="MJXc-Node-3" class="mjx-mstyle"><span id="MJXc-Node-4" class="mjx-mrow" style="font-size: 144%;"><span id="MJXc-Node-5" class="mjx-texatom"><span id="MJXc-Node-6" class="mjx-mrow"><span id="MJXc-Node-7" class="mjx-mfrac"><span class="mjx-box MJXc-stacked" style="width: 0.849em; padding: 0px 0.12em;"><span class="mjx-numerator" style="font-size: 70.7%; width: 1.2em; top: -1.295em;"><span id="MJXc-Node-8" class="mjx-mn" style=""><span class="mjx-char MJXc-TeX-main-R" style="padding-top: 0.396em; padding-bottom: 0.347em;">29</span></span></span><span class="mjx-denominator" style="font-size: 70.7%; width: 1.2em; bottom: -0.598em;"><span id="MJXc-Node-9" class="mjx-mn" style=""><span class="mjx-char MJXc-TeX-main-R" style="padding-top: 0.396em; padding-bottom: 0.347em;">7</span></span></span><span class="mjx-line" style="border-bottom: 1.8px solid; top: -0.281em; width: 0.849em;"></span></span><span class="mjx-vsize" style="height: 1.338em; vertical-align: -0.423em;"></span></span></span></span><span id="MJXc-Node-10" class="mjx-mo MJXc-space2"><span class="mjx-char MJXc-TeX-main-R" style="padding-top: 0.298em; padding-bottom: 0.445em;">−</span></span><span id="MJXc-Node-11" class="mjx-mi MJXc-space2"><span class="mjx-char MJXc-TeX-math-I" style="padding-top: 0.199em; padding-bottom: 0.298em;">x</span></span><span id="MJXc-Node-12" class="mjx-mo MJXc-space3"><span class="mjx-char MJXc-TeX-main-R" style="padding-top: 0.101em; padding-bottom: 0.298em;">=</span></span><span id="MJXc-Node-13" class="mjx-texatom MJXc-space3"><span id="MJXc-Node-14" class="mjx-mrow"><span id="MJXc-Node-15" class="mjx-mfrac"><span class="mjx-box MJXc-stacked" style="width: 0.495em; padding: 0px 0.12em;"><span class="mjx-numerator" style="font-size: 70.7%; width: 0.7em; top: -1.294em;"><span id="MJXc-Node-16" class="mjx-mn" style=""><span class="mjx-char MJXc-TeX-main-R" style="padding-top: 0.396em; padding-bottom: 0.347em;">3</span></span></span><span class="mjx-denominator" style="font-size: 70.7%; width: 0.7em; bottom: -0.566em;"><span id="MJXc-Node-17" class="mjx-mn" style=""><span class="mjx-char MJXc-TeX-main-R" style="padding-top: 0.396em; padding-bottom: 0.347em;">2</span></span></span><span class="mjx-line" style="border-bottom: 1.8px solid; top: -0.281em; width: 0.495em;"></span></span><span class="mjx-vsize" style="height: 1.315em; vertical-align: -0.4em;"></span></span></span></span></span></span></span></span><span class="MJX_Assistive_MathML" role="presentation"><math xmlns="http://www.w3.org/1998/Math/MathML"><mstyle mathsize="1.44em"><mrow class="MJX-TeXAtom-ORD"><mfrac><mn>29</mn><mn>7</mn></mfrac></mrow><mo>−</mo><mi>x</mi><mo>=</mo><mrow class="MJX-TeXAtom-ORD"><mfrac><mn>3</mn><mn>2</mn></mfrac></mrow></mstyle></math></span></span><script type="math/tex" id="MathJax-Element-1">\Large{29\over7}-x={3\over 2}</script> (Viết đáp án dưới dạng phân s

Tìm x: $\Large{29\over7}-x={3\over 2}$ (Viết đáp án dưới dạng phân s

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Tác giả: Thầy Tùng

Đăng ngày: 18 Aug 2022

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Lời giải chi tiết

Câu hỏi:

Tìm x:

$\Large{29\over7}-x={3\over 2}$

(Viết đáp án dưới dạng phân số tối giản a/b).

A. Đáp án: 37/14

Đáp án án đúng là: A

Lời giải chi tiết:

x = 29/7 - 3/2 = 37/14

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