y=−18 and tell me if you need the step- by-step :)

2y+3=3(y+7) -Use Distributive Property- 2y+3=3y+3(7) 2y+3=3y+21 -Minus 2y on both sides- 3=3y+21-2y 3=y+21 -Minus 21 on both sides- y=3-21 y=-18