SOLUTION: The supplement of an angle is 20 degrees larger that the angle. Find the measure of the angle. Thanks for the help!

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Question 12685: The supplement of an angle is 20 degrees larger that the angle. Find the measure of the angle. Thanks for the help!
Answer by AdolphousC(70) About Me  (Show Source):
You can put this solution on YOUR website!
Let X be your angle
Let 180 - X be your supplement


+180+-+X+=+X+%2B+20+
Subtract X from both sides
+180+-+2X+=+20+
Subtract 180 from Both Sides
+-2X+=+-160+
Divide Both Sides by -2
+X+=+80+
Your Angle is 80, the Supplement is 180 - 80 = 100