Question

pls solve these two questions

Answer 1

1.Given a-b =30° »»»»» 1

we know that the angle made by a st. line is 180°

so, a+b= 180° »»»»»»» 2

add 1 and 2

2a = 210

a = 105°

b= 75°

2.
a -2b =30° »»»»» 1
a+ b =180° »»»»»» 2

subtract 1 from 2


3b = 150

b= 50°
a= 130°


Hope you understand

any doubts comment ;))