Question

Someone pls help and dont troll

Answer 1

2x+9=15 or 2x+9=-15

- Case 1: 2x+9=15. Then 2x=15-9=6. Thus, x=3.
- Case 2: 2x+9=-15. Then 2x=-15-9=-24. Thus x=-12.

Hence x=3 or x=-12.

Answer 2

Answer: A

Explanation:

2x + 9 = 15

2x = 6

x = 3

2x+9 = -15

2x = -24

x = -12