SOLUTION: If the supplement of an angle is 2/3 of itself then determine the angle

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Question 1043412: If the supplement of an angle is 2/3 of itself then determine the angle
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
x is the angle
supplementary angles add to 180
2/3 of the angle is (2/3)x
Therefore x+(2/3)x=(5/3)x
That equals 180
multiply both sides by the reciprocal of (5/3)
the left side becomes x, the right side becomes 180*(3/5)=108 degrees.
The angle is 108 degrees
(2/3) of it is 72 degrees ANSWER
They add to 180 degrees