Question

essas tbm por favorrrrr​

Answer 1

Explicação passo-a-passo:

2x - 10° + 20° + 30° = 180°

2x = 180° - 40°

2x = 140°

x = 140°/2

x = 70°

x - 10° + x + 30° + 2x = 180°

4x = 180° - 20°

4x = 160°

x = 160°/4

x = 40°

x + 3x + + 1/2x = 180°

9/2x = 180°

9/2x = 180°

x = 180°/(9/2)

x = 40°