Question

(7а-3)-(-8-2а)
-2(0,5х-1,4у)+2х+3,2у

Answer 1

1. (7a-3)-(-8-2a)=7a-3+8+2a=9a+5
2. -2(0.5x-1.4y)+2x+3.2y=-x+2.8y+2x+3.2y=x+6y

Answer 2

1)=7а-3+8+2а=9а+5
2)=-х+2.8у+2х+3,2у=3х+6у