Question

O valor de X é:

A) 2x+20°=3x-65°

B)2x 4x 2x​

Answer 1

Resposta:

a) 2x + 20° + 3x - 65° = 90°

5x - 45° = 90°

5x = 90°-45°

5x= 45°

x= 45°/5

x= 9

b) 2x + 4x +2x = 180°

8x = 180°

x = 180°/8

x = 22,5°