Câu1:1/4+x=5/2×8/7 Câu2:7/3-x=11/5×5/6

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Câu1:1/4+x=5/2×8/7 Câu2:7/3-x=11/5×5/6

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Adalynn 3 tháng 2021-09-27T10:13:32+00:00 2 Answers 7 views 0

Answers ( )

    0
    2021-09-27T10:14:56+00:00

    1/

    $\dfrac{1}{4}+x=\dfrac{5}{2}×\dfrac{8}{7}$

    $\dfrac{1}{4}+x=\dfrac{20}{7}$

    $x=\dfrac{20}{7}-\dfrac{1}{4}$

    $x=\dfrac{73}{28}$

    2/

    $\dfrac{7}{3}-x=\dfrac{11}{5}×\dfrac{5}{6}$

    $\dfrac{7}{3}-x=\dfrac{11}{6}$

    $x=\dfrac{7}{3}-\dfrac{11}{6}$

    $x=\dfrac{1}{2}$

    chúc bạn học tốt!

    0
    2021-09-27T10:15:24+00:00

    Đáp án:

     

    Giải thích các bước giải:

    Câu1

    `1/4+x=5/2×8/7`

    `1/4+x=20/7`

    `=>x=20/7-1/4=73/28`

    Câu2:

    `7/3-x=11/5×5/6`

    `7/3-x=11/6`

    `=>x=7/3-11/6=3/6=1/2`

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