Respuesta :

Answer:  18

Explanation:

The angles (8x-50) and 86 combine to form a straight angle, which is 180 degrees.

(8x-50) + 86 = 180

8x+(-50+86) = 180

8x+36 = 180

8x = 180-36

8x = 144

x = 144/8

x = 18