Tìm x biết x.2-2= x:2+4

2 câu trả lời

`x.2-2= x:2+4`

`=>2x-2=x:2+8:2`

`=>2(2x-2):2=(x+8):2`

`=>2(2x-2)=x+8`

`=>4x-4=x+8`

`=>4x-x=8+4`

`=>3x=12`

`=>x=12:3`

`=>x=4`

Vậy `x=4`

`x. 2 - 2 = x : 2 + 4`

`2x - 2 = x : 2 + 8 : 2`

 `(2x. 2 - 2 ) : 2= ( x + 8 ) : 2`

`4x - 4 = x + 8`

`4x - x = 8 + 4`

`3x = 12`

`x = 12 : 3`

`x = 4`

Vậy `x = 4`

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