SOLUTION: what are two supplementary angles if one angle is three times larger than the other angle? please show solution

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Question 531858: what are two supplementary angles if one angle is three times larger than the other angle? please show solution
Answer by oberobic(2304) About Me  (Show Source):
You can put this solution on YOUR website!
x + y = 180 degree, if they are supplementary.
x = 3*y
.
substitute
.
3y + y = 180 degrees
.
4y = 180
.
y = 45 degrees
.
x = 3*45 = 135 degrees
.
Done.