We have to find the measure of x.
We will use the fact that the sum of the measures of the internal angles of a triangle is equal to 180°.
We know one angle measure: 60°.
The other vertex angle is vertical angles with the angle with measure 53°, so it also has a measure of 53°.
The last angle is supplementary to x, so it will have a measure that is (180-x)°.
Then, if we add these three measures and equal to 180°, we can find the value of x as:

Answer: x = 113° [Option d]