Question

HELP??

Javier solved the equation shown.

8(9 + x) = 192
72 + x = 192
x = 120
Which mistake did Javier make in his calculations?

Answer 1

C

Explanation:

given

8(9 + x) = 192 ← multiply each ter in the parenthesis

72 + 8x = 192

Javier made his mistake here , did not multiply x by 8

subtract 72 from both sides

8x = 120 ( divide both sides by 8 )

x = 15