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

Toán Lớp 7: x-1/3=2-x/-2 -vote 5 sao ch ai lm nhanh, đúng nhe-

Toán Lớp 7: x-1/3=2-x/-2
-vote 5 sao ch ai lm nhanh, đúng nhe-

Comments ( 2 )

  1. XIN HAY NHẤT
    @ml7acxh
    $Ta$ $có:$
    $\frac{x-1}{3}$ $=$$\frac{2-x}{-2}$
    $⇒-2(x-1)=3(2-x)$
    $⇒-2x+2=6-3x$
    $⇒-2x+3x=6-2$
    $⇒x=4$
    $Vậy$ $x=4$

  2. (x-1)/3=(2-x)/-2 $\\$ =>(x-1).-2=(2-x).3 $\\$ -2x+2=3x-6 $\\$ -2x+3x=6-2 $\\$ x=4

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