Answer:
(-13m - 1)/(n + 5).
Step-by-step explanation:
-5m-9/n+5 + -8m+8/n+5
The denominators are the same so we add the numerators:
= (-5m - 9 - 8m + 8 / (n + 5)
= (-13m - 1)/(n + 5).
