Answer:
60°
Step-by-step explanation:
Assuming AB is a straight line
∠ACD + ∠DCE + ∠ECB = 180° (property of adjacent angles on a straight line)
hence
x + 3x + 2x = 180°
6x = 180°
x = 180/6 = 30°
2x = 30° x 2 = 60°
