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

Toán Lớp 6: |x+4|+x=2/3.Giải thích rõ bước giải nhé

Toán Lớp 6: |x+4|+x=2/3.Giải thích rõ bước giải nhé

Comments ( 2 )

  1. |x + 4|+x=2/3
    x + 4 + x = 2/3
    2x+4 = 2/3
    2x = 2/3 – 4
    2x = -10/3
    x = -10/3 : 2
    x = -5/3

  2. $|x+4|+x=\dfrac{2}{3}$
    $⇔|x+4|=\dfrac{2}{3}-x$
    $⇔$\(\left[ \begin{array}{l}x+4=\dfrac{2}{3}-x\\x+4=x-\dfrac{2}{3}\end{array} \right.\) 
    $⇔x=-\dfrac{5}{3}$
     

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

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