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

Question

Mathematics

Diamond Lang

1 October, 01:22

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

+5

Answers (1)

Know the Answer?

Ariel Pacheco · Answer 1

When distributing the negative to the (5-9y) you need to distribute it to both the 5 and the - 9 so your 9 should be positive now. So it should be 72+24y = 4y-5+9y

Clare was solving an equation, but when she checked her answer she saw her solution was incorrect. She knows she made amistake, but she can't find it. Where is Clare's mistake?12 (5 + 2y) = 4y - (5 - 9y)72 + 24y = 4y - 5 - 972 + 24y = - 5y - 524y = 5y - 7729 y = - 77-77

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