Answer:
Check the figure attached.
Explanation:
We have
Expression in Rectangle 1= 4x+3y
Expression in Rectangle 2 = 2x-y
Their sum will be in circle 1
adding:

Now using the expression in Rectangle 3 and circle 3, we can find expression Of rectangle 4. Let it be Exp

Now using Expression in rectangle 2 and 4 to find result for circle 3

Now adding terms in the figure