Question

What is the value of x? (1 point)

1. 24
2. 9
3. 21
4. 14
(i forgot the picture the first time)

Answer 1

Combine like terms 8x=168
Divide both sides by 8
X=21

Answer 2

(5x+15)°+(3x-3)°=180°(CO-INTERIOR ANGLES)

`5x + 15 + 3x - 3 = 180 \\ 5x + 3x = 180 - 15 + 3 \\ 8x = 168 \\ (8x)/(8) = (168)/(8) \\ x = 21`

ATTACHED IS THE SOLUTION