Answer:
45° and 135°
Step-by-step explanation:
let x be the angle then its supplement is 190 - x
Given x is 3 times its supplement , then
x = 3(180 - x) ← distribute parenthesis by 3
x = 540 - 3x ( add 3x to both sides )
4x = 540 ( divide both sides by 4 )
x = 135
and 180 - x = 180 - 135 = 45
The 2 angles are 45° and 135°
