3. Solve each equation, and check your solution.

(2m - 16) = { (2m + 4)

-4 (r+2) = 4 (2 - 2r)

12 (5 + 2y) = 4y - (6 - 9y)

1) 2m - 16 = 2m + 4

2m - 2m = 4 + 16

0 = 20 (no solution)

2) - 4 (r + 2) = 4 (2 - 2r)

- (r + 2) = 2 - 2r

-r - 2 = 2 - 2r

-r + 2r = 2 + 2

r = 4

3) 12 (5 + 2y) = 4y - (6 - 9y)

60 + 24y = 4y - 6 + 9y

60 + 24y = 13y - 6

24y - 13y = - 6 - 60

11y = - 66

y = - 6