( x - 1/2 ) : 2/3 + 0,75 = - 3 hỗn số 3/4

`(x-1/2) :2/3 +0,75 = -3 3/4`

`(x-1/2) :2/3  + 3/4= -15/4`

`(x-1/2) :2/3 = -15/4 - 3/4`

`(x-1/2):2/3 = -9/2`

`x-1/2 = -9/2 . 2/3`

`x-1/2 = -3`

`x = -3 +1/2`

`x = -6/2 + 1/2`

`x = -5/2`

`text{Vậy,}` `x=-5/2`

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