Question

The difference between the measures of a pair of opposite angles of a triangle is 30

Answer 1

let one angle be x then other is 30+x and lets consider last angle is x' then sum of all angles of tringle is 180°

x+x+30+x'=180

2x+x'=150

x=150-x'/2

it is two variable equation

x'=10°then

x=70°and x+30=100°