Answer:
G = 109
Explanation:
The exterior angle is equal to the sum of the opposite interior angles.
12x-10 = 73+ 7x-3
Combine like terms.
12x-10 = 70+ 7x
Subtract 7x from each side.
12x-10-7x= 70+7x-7x
5x-10 = 70
Add 10 to each side.
5x-10+10 = 70+10
5x= 80
Divide each side by 5.
5x/5 = 80/5
x = 16
Now we can find angle G.
7x-3
7*16-3
112-3
109
G = 109