Answer:
Step-by-step explanation:
Sum 9,200 + 4,000 = 13,200
Difference 9,200 - 4,000 = 5,200
Please refer to the attachment
switch sides
-g+2/5UA=5b
add g to both sides
-g+1/5UA+g=5b+g
simplify
1/5UA=5b+g
multiply both side by 5
5×1/5UA=5×5b+g
AU=25b+5g
divide both sides by U
AU/U=25b/u+5g/u =U/U=0
A=25b+5g/U