Question

10y-5(1+y)=3(2y-2)-20

Answer 1

10y-5-5y=6y-6-20
10y-5y-6y=-6-20+5
-y=-21.(-1)
y=21

Answer 2

10y-5(1+y)=3(2y-2)-20
10y-5-5y=6y-6-20
10y-5y-6y=-6-20+5
-y=-21 (-1)
y=21