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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 6: giúp e vs !!!!!!!!!!!! (2/3x-4/9).(1/2+-3/7:x)=0

Toán Lớp 6: giúp e vs !!!!!!!!!!!!
(2/3x-4/9).(1/2+-3/7:x)=0

Comments ( 2 )

  1. Mình lm bằng máy tính nên mới vậy nha
    mong bn hiểu ạ
    CHÚC BN HỌC TỐT !!!

    toan-lop-6-giup-e-vs-2-3-4-9-1-2-3-7-0

  2. Giải đáp_Lời giải và giải thích chi tiết:
    ((2)/(3)x-(4)/(9))*((1)/(2)+(-3)/(7):x)=0
    ⇒\(\left[ \begin{array}{l}\dfrac{2}{3}x-\dfrac{4}{9}=0\\\dfrac{1}{2}+\dfrac{-3}{7}:x=0\end{array} \right.\)
    ⇒\(\left[ \begin{array}{l}\dfrac{2}{3}x=\dfrac{4}{9}\\\dfrac{-3}{7}:x=\dfrac{-1}{2}\end{array} \right.\)
    ⇒\(\left[ \begin{array}{l}x=\dfrac{4}{9}:\dfrac{2}{3}\\x=\dfrac{-3}{7}:\dfrac{-1}{2}\end{array} \right.\)
    ⇒\(\left[ \begin{array}{l}x=\dfrac{4}{9}.\dfrac{3}{2}\\x=\dfrac{3}{7}.2\end{array} \right.\)
    ⇒\(\left[ \begin{array}{l}x=\dfrac{2}{3}\\x=\dfrac{6}{7}\end{array} \right.\)
    Vậy x=(2)/(3); x=(6)/(7)

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222-9+11+12:2*14+14 = ? ( )

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