Question

What does a equal if 15+4a=7a

Answer 1

a=5

1. Subtract 4a from both sides… 15+4a-4a=7a-4a

2. Simplify… 15=3a

3. Divide both sides by 3… 15/3=3a/3

4. Simplify… 5=a

Answer: a=5

Answer 2

15=7a-4a
15=3a
15/3=a
5=a
So, a equal to 5