You can put this solution on YOUR website! Jim,
The key to this is knowing that supplementary angles add up to 180 degrees:
Give the measure of the angle in degrees.
If measure of angle y=82degrees, find the supplement of angle y.
Let the supplement of y be x
x+82=180
x+82-82=180-82
x=98 degrees
The supplement of angle y is 98 degrees.
Happy Calculating!!!