Question

how to slove this and what is solution

Answer 1

Let the angle be a

Supplement angle = 180 - a

According to question,

( 180 - a) - a = 30

=> 180 - a - a = 30

=> 180 - 2a = 30

=> 2a = 180 - 30

=> 2a =150

=> a = 75

Required angle = 75°

Answer 2

Your answer ⤵

___________________________

Let the angle be a supplement angle = 180 - a

According to the question !

180 - a - a = 30

- 2 a = 30 - 180

- 2 a = - 150

a = 75°

__________________________