Question

1 - Calcule o valor de x nas figuras abaixo:

Answer 1

D) 5x+20° = 2x+50°
5x-2x=50°-20°
3x=30°
x=10°

E) 2x+30° +3x-20°=180°
5x=180°-10°
5x=170°
x=34°