Question

Please help! 30 points !!

Answer 1

1. C

2. C

Explanation:

1. 5x+12=57

Subtract 12 from both sides

5x=45

Divide both sides by 5

x=9

2. 7-4x=12-3x

Combine like terms =

-4x+3x=-12-7

x=-12-7

x=19