Respuesta :

Answer:

B. 30

Step-by-step explanation:

3x + 2x + x = 180 (angle sum of a triangle is 180)

6x = 180

x = 30

Answer:

B. 30

Step-by-step explanation:

3x + 2x + x = 180

             6x = 180

               x = 180/6

               x = 30