Question

In a triangle ABC ,if angle A +angle B =150 and angle b + angle c=75 , then angle b =

Answer 1

there is the answer in the pic

Answer 2

Hay... Friend your answer is (angle A+B=150
C=75-b but I know that a+b+c=180 so 150+75-b
=180,-b=180- 225,-b=-45,so b=45....