3y+3(2y-4)=y

Solve for y:
3 y+3 (2 y-4) = y

3 (2 y-4) = 6 y-12:
6 y-12+3 y = y

Grouping like terms, 6 y+3 y-12 = (3 y+6 y)-12:
(3 y+6 y)-12 = y

3 y+6 y = 9 y:
Answer: | 9y-12 = y=3/2