Verified answer

1)8x-8=20-6x

8x+6x=20+8

14x=28

x=2

2) 4(x-3)=x+6

4x-12=x+6

4x-x=6+12

3x=18

x=6

3) 4-6(x+2)=3-5x

4-6x-12=3-5x

-6x-8=3-5x

-6x+5x=3+8

-x=11

x=-11

4)0,3(8-3y)=3,2-0,8(y-7)

2,4-0,9y=3,2-0,8y+5,6

2,4-0,9y=8,8-0,8y

-0,9y+0,8y=8,8-2,4

-0,1y=6,4

y=-64