Respuesta :

Answer:

x = 111

Step-by-step explanation:

126+158+120+125+121+139 = 789

900-789 = 111

(n-2)*180

5*180 = 900

Answer:

x = 111

Step-by-step explanation:

126+158+120+125+121+139 = 789

900-789 = 111

(n-2)*180

5*180 = 900