Question

I need to know carly’s mistake

Answer 1

Carly's mistake is in Step 1. She multiplied -4 and 10 instead of dividing -4 and 10

Explanation:

-4(7j+2)=10

7j+2= -2.5

7j= -4.5

j= -0.643 or j = -4/7

Answer 2

Carly multiply by -4 instead of dividing

Explanation:

-4(7j+2) = 10

Divide each side by -4

-4/-4(7j+2) = 10/-4

7j+2 = -2.5