Answer:
30 degrees
Explanation:
In the bottom triangle,
Both angles are 75 degrees, so their sum is 75 + 75 = 150 degrees
The remaining angle is 180 - (sum of the two other angles)
= 180 - ( 75 + 75)
= 30 degrees
As this angle is a the vertically opposite angle to x, it will be equal to x
∴ x = 30 degrees