Answer:
C = 65
Step-by-step explanation:
A + B = 180
(2x) + (3x - 20) = 180
5x - 20 = 180
5x = 200
x = 40
Substitute for 32 in for x:
2x - 15 = C
2(40) - 15 = C
80 - 15 = C
65 = C
