Question

Resolva:
a) x+30° +3x+ 2x = 180°
b) x+10° +2x +30° +x = 180°
Alguém sabe?

Answer 1

a) x + 3x + 2x = 180° - 30°
    6x = 150°
      x = 150° / 6
      x = 25°

b) x + 2x + x = 180° - 10° - 30°
     4x = 140°
       x = 140°/4
       x = 35°

Answer 2

a)

x + 30° + 3x + 2x = 180°

x + 3x + 2x = 180° - 30°

6x = 150°

x = 150° / 6

x = 25°

b)

x + 10° + 2x + 30° + x = 180°

x + 2x + x = 180° - 10° - 30°

4x = 140°

x = 140° / 4

x = 35°