Answer:
c = 6
Step-by-step explanation:
2(4 + cy) = 12y + 8
8 + 2cy = 12y + 8
12y + 8 = 8 + 2cy
12y - 2cy = 8 - 8
2y (6 - c) = 0
Divide through by 2y
(6 - c) = 0