If the measure of an angle is twenty less than the measure of its complement, what is the measure of the angle

Assuming the measurement is in degrees:

The sum of an angle and its complement is 90°.

Assign the variable x to the angle. Since it is 20° less than its complement, the angle's complement can be written as x+20°.

With this information, an equation can be written:

x+x+20°=90°

2x+20°=90°

2x=70°

x=35

The measure of the angle is 35°.