Question

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

Answer 1

10y - 5 *(1+y) = 3 *(2y-2) - 20
10y - 5 - 5y = 6y - 6 - 20
5y - 5 = 6y - 26
5y - 6y = -26 + 5
-1y = -21 * (-1)
y = 21

Answer 2

10y-5.(1+y)=3.(2y-2)-20
10y-5+5y=6y-6-20
10y+5y-6y= -26+5
15y-6y= -21
9y= -21
y=-21/9
y=-7/3