Question

angle (2y) +(2y+20°) form a linear pair. Find their value

Answer 1

2y+2y+20°=180°(linear pair )
4y=160°
y=40°
2y=80°
2y+20°=100°

Answer 2

2y+2y+20°=180° . 4y=180-20=160°. y= 160°/4=40°. y=40° therefore 2y=80° and 2y + 20° = 100° . THANKYOU