Answer:
31° and 149°
Step-by-step explanation:
Supplementary angles sum to 180°, hence
x - 19 + x + 99 = 180
2x + 80 = 180 ( subtract 80 from both sides )
2x = 100 ( divide both sides by 2 )
x = 50
angle 1 = x - 19 = 50 - 19 = 31°
angle 2 = x + 99 = 50 + 99 = 149°
