Answer:
N=7a-3
A) a-16
U) -5a-9
Step-by-step explanation:
First you need to group the like terms
for example
-7a+2a-4-5
Next
You need to subtract the numbers -4-5 so it equals
-9
Add the rest -7a+2a=-5a
Where your answer would then be -5a-9
Hope this helps I only did the first 3 for you!
