Please help Number 3

Answer:
A: x=15
Step-by-step explanation:
She did not distribute the 1/3 to the 9 is where the initial mistake is made.
When you do distribute (or multiply both sides by 3), you are left with
x=24-9 or 1/3+3=8
x=15 1/3=5 (aka 3X5)
x=15