Question

giúp mk với ạ

Answer 1

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

`3/4 : x = -2 - 1/4`

`3/4 : x = -9/4`

`x = 3/4 : (-9/4)`

`x = -1/3`

Vậy `x = -1/3`

Answer 2

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

`3 / 4 : x = -2 - 1 / 4`

`3 / 4 : x = [-8] / 4 - 1 / 4`

`3 / 4 : x = [-9] / 4`

`x = 3 / 4 : [-9] / 4`

`x = 3 / 4 . 4 / [-9]`

`x = [-1] / 3`