pls and thank you if you help out

Answer: x = 80°
Step-by-step explanation:
Hi,
Since the angle is bisected, that means it is split in half and that both sides equal each other.
Therefore,
50 = 1/2x + 10
subtract 10 from both sides
40 = 1/2x
divide 40 by 1/2
x = 80°
Hope this helped :)