Answer:
a = 15
Step-by-step explanation:
First, you have to combine like terms: 5a and 3a, -5, -15, 6, and 4.
You can do it in any order and you will always get a = 15 for your answer.
Hope this helps!!!
[tex]5a - 5 - 15 = 3a + 6 + 4 \\ 5a - 3a = 5 + 15 + 6 + 4 \\ 2a = 30 \\ \frac{2a}{2} = \frac{30}{2} \\ a = 15[/tex]
