Respuesta :

-7 + 3s - 4

Rearranging

3s -4 -7

3s -11

8(2r - 1)

open the parenthesis

16r -8

-(7p - 2)

open the parenthesis

-7p + 2

12t + 9 - 4x - 1 ​

Rearrange

12t - 4x -1+9

12t-4x +8