Answer:
x=27
Step-by-step explanation:
-4x+4=-3x+31
4=x+31
27=x
Answer: X+5
Step-by-step explanation:
When you take out the 9 it should be 9(x+5) and when you take out the 9x on the bottom it gives you (x+5)+20 therefore x+5 is your GCF.
I hope this helps :)