Answer:
x = 15
Explanation:
Total degrees around one circle is 360°.
So there are about two angles here, one identified (330°) and another unidentified (2x).
The equation here would be
2x + 330 = 360
Now with quick algebra,
2x = 360 - 330
2x = 30
x = 30 ÷ 2
x = 15