\angle x∠xangle, x and \angle y∠yangle, y are supplementary angles. \angle y∠yangle, y measures 156^\circ156 ∘ 156, degrees. What is the measure of \angle x∠xangle, x?

The measure of x is  

Explanation:

It is given that and are supplementary angles.

The two angles are said to be supplementary if their angles add up to 180°

Thus, we have,

Also, it is given that

Substituting the value in the expression , we have,

Subtracting both sides by , we get,

Thus, the measure of x is