1/2x + 1/2 (x-2) = 3/4 - 2x

Đáp án:

`x=7/12`

Giải thích các bước giải:

`1/2x+1/2(x-2) = 3/4-2x`

`=> 1/2x+1/2. x-1/2. 2 = 3/4-2x`

`=> 1/2x+1/2x-1 = 3/4-2x`

`=> 1/2x+1/2x+2x = 3/4+1`

`=> (1/2+1/2+2)x = 3/4+4/4`

`=> 3x = 7/4`

`=> x = 7/4 : 3`

`=> x = 7/4. 1/3`

`=> x = 7/12`

Vậy `x=7/12`