Question

subtract 8a-9ab+3b+15 from 13a-9ab-5b+8

Answer 1

$(13a - 9ab - 5b + 8) - (8a - 9ab + 3b + 15) \\ \\ 13a - 9ab - 5b + 8 - 8a + 9ab - 3b - 15 \\ \\ 5a - 8b - 7 \\ \\ here \: \: is \: your \: answer \\ \\ thank \: you$

Answer 2

13a-9ab-5b+8-(8a-9ab+3b+15)
13a-9ab-5b+8-8a+9ab-3b-15
13a-8a+9ab-9ab-3b-5b+8-15
5a-8b-7