Question

If angles a and b form a linear pair of angles and
a - 2b = 30°, then find the values of a and b.​

Answer 1

Hey mate hope it helps you...

a+b = 180° ....(linear pair)

a-2b= 30°

Subtracting the two equations we get,

3b = 150°

b = 50°

a+b= 180°

a = 130°

Answer 2

a=30+2b(eq.1)

Now,

a+b=180(Linear pair)

putting the value of a

30+2b+b=180

30+3b=180

3b=180-30

3b=150

b=150/3

b=50

Now putting the value of b in eq .1

a=30+100

a=130

Hence,a=130,b=50