in angle abc, if mA is thirteen more than mB and mC is seven more than six times mB, find the measure of each angle

Answer 1

A=13+B

C=7+6B

A+B+C = 180

13+B + B + 7+6B = 180

8B = 160

B = 20 degrees

A = 33 degrees

C =127 degrees

20+33+127= 180