Clare was solving an equation, but when she checked her answer she saw her solution was incorrect. She knows she made a
mistake, but she can't find it. Where is Clare's mistake?
12(5 + 2y) = 4y - (5 – 9y)
72 + 24y = 4y - 5 - 9
72 +24y = -5y - 5
24y = 5y - 77
29 y = -77
-77