Answer: x = 60 degrees
Explanation:
As we see, there is a 90 degree angle formed the top left corner. You divided it by 2 and it is formed by both triangles and u get 45 degrees.
Now, according to angle sum property:
angle A + Angle B + Angle C = 180 degrees
therefore, 75 + 45 + angle c = 180
and by linear equation , angle c = 180 - [75 + 45]
= 180 -120
= 60
therefore, x = 60