Answer:
A = 99°
B = 62°
C = 19°
Step-by-step explanation:
(3x + 12) + (2x + 4) + (x - 10)
180 = 6x + 6
6x = 180 - 6
6x = 174
X= 29
3 X 29 + 12 = 99°
2 x 29 + 4 = 62°
29 - 10 = 19°
