Two angles are supplementary if the sum of their measures is 180∘. If the measure of one angle is 13x degrees, represent the measure of its supplement as an expression of x.

180-13x

To represent the measure of the supplement of an angle with a measure of 13x degrees as an expression of x, we can use the fact that supplementary angles add up to 180 degrees.

Let the measure of the supplement be represented by y degrees.
According to the given information, the sum of the angle and its supplement is 180 degrees, so we can set up the equation:

13x + y = 180

To find the value of y, we can isolate it by subtracting 13x from both sides of the equation:

y = 180 - 13x

Therefore, the measure of the supplement is represented as the expression 180 - 13x.

To find the expression for the measure of the supplement, we need to remember that supplementary angles add up to 180 degrees.

Let's express the measure of the first angle as 13x degrees.

The measure of its supplement can be represented by 180 - (measure of the first angle).

So, the expression for the measure of its supplement is 180 - 13x degrees.