Answer:
A. x=30
Explanation:
1. first you subtract 5 from both side so you can get rid of it.
x/3 + 5 =15
-5 -5
x/3=15
2. then multiply all terms by 3 to eliminate the fraction's denominator
x/3 ⋅ 3 = 10⋅3
3. lastly you simplify. cancel the 3 from the fraction and solve for x.
x=30