Hey there!
The answer is 30 degrees.
First, we will start by figuring out the other angle, N:
We can do this by making an equation. We know that angles connected by a straight line form a total of 180 degrees, and the line OK is a straight line, and the angles on it are 105, 45, and N. To solve for N, we make the equation:
180 = 105 + 45 + n
180 = 150 + n
30 = n
Now, we know that the missing angle N is 30. Also, we know that the angles in a triangle add up to 180, and we have all the angles in the left triangle except "2x", so we solve for it by making the equation:
180 = 30 + 90 + 2x
180 = 120 + 2x
60 = 2x
30 = x
HOPE IT HELPS AND HAVE A GREAT DAY!