What we are going to do is add

by

. The first thing we do is make common denominators for

and

:

. Now we add

by

:

. Now we make

a mixed number:

. Therefore, your answer is

. Hoped I helped. :)
Answer:
27
Step-by-step explanation:
f(-2)=3(-2)-4
=-6-4
=-10
G(-10)=-(-10)+7
=17
17-(-10)=27
The answer is A.
hope this helps!