Answer:
X = 30
Explanation:
A circle's measurements equal 360°
So (x+30)°+(3x+60)°+(4x+30)° = 360
8x+120° = 360°
If you subtract 120° from both sides
8x+120°-120°=360°-120°
Then divide by 8 on both sides
8x/8= 240°/8
You would find that X = 30
x = 30
