Answer:13a + 15b + 18
Step-by-step explanation:
By distributing the 5:
5a + 15b + 6 + 8a + 12
We can combine like terms and w get:
13a + 15b + 18
Answer:13a+15b+18
5a+15b+6+8a+12
13a+15b+6+12
13a+15b+18
