Question 21030
Here you go:
7(6-y)=-3(y-2)
42-7y=-3y+6   (You should add 7 to both sides so you can have a positive #)
42+7y-7y=+7y-3y+6
42=4y+6       (+7y-7y=0 and cancel each other out)
42-6=4y+6-6   (+6-6=0 and cancel each other out)
36=4y
36/4=4y/4
9=y