Question

O valor de x é? *

* x + 15° *

*2x-10°*

a) 40°

b) 30°

c) 25°

d) 22,5°

e) 20°

​

Answer 1

Resposta:

letra c 25° porque x+15°=2×-10°

x-2x= -10° -15°

-x = - 25° .(-1)

x = 25°