Respuesta :

triparnadewanjee07

Answer: 195

Step-by-step explanation:

(0.3x + 66) + (0.1x + 36) = 180. ( 180 because thats the angle of a straight line)

0.3x + 0.1x + 66 + 36 = 180

0.4x + 102 = 180

0.4x = 180 - 102

0.4x = 78

x = 195