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

Toán Lớp 8: Giari phương trình $\frac{x}{3}$ $+$ $\frac{2x-1}{6}$ = $1 -$$\frac{x}{3}$

Toán Lớp 8: Giari phương trình
$\frac{x}{3}$ $+$ $\frac{2x-1}{6}$ = $1 -$$\frac{x}{3}$

Comments ( 2 )

  1. Giải đáp + Lời giải và giải thích chi tiết: ( mik ko bt đk nx nha )
    @hathithu3
    Giangs inh zui zẻ nha 
    ( hay thì cho mik ctlhn nha)
     
     

    toan-lop-8-giari-phuong-trinh-frac-3-frac-2-1-6-1-frac-3

  2. $\dfrac{x}{3}+\dfrac{2x-1}{6}=1-\dfrac{x}{3}$
    $⇔ \dfrac{2x}{6}+\dfrac{2x-1}{6}=\dfrac{3}{3}-\dfrac{x}{3}$
    $⇔ \dfrac{2x+2x-1}{6}=\dfrac{3-x}{3}$
    $⇔ \dfrac{4x-1}{6}=\dfrac{3-x}{3}$
    $⇔ \dfrac{4x-1}{6}-\dfrac{3-x}{3}=0$
    $⇔ \dfrac{4x-1}{6}-\dfrac{2.(3-x)}{6}=0$
    $⇔ \dfrac{4x-1}{6}-\dfrac{6-2x}{6}=0$
    $⇔ \dfrac{4x-1-(6-2x)}{6}=0$
    $⇔ \dfrac{4x-1-6+2x}{6}=0$
    $⇔ \dfrac{6x-7}{6}=0$
    $⇔ (6x-7):6=0$
    $⇔ 6x-7=0$
    $⇔ 6x=7$
    $⇔ x=\dfrac{7}{6}$
    Vậy $x=\dfrac{7}{6}$
    $#thanhmaii2008$

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