Answer:
3x + 2x + 80=180
5x=100
x=20
x = 20°
Step-by-step explanation:
straight line= 180°
given on above is that :
80° + 2x + 3x =180°
@
80° + 5x = 180°
180° - 80° = 100°
5x = 100°
100/5x= 20°
x= 20°
