SOLUTION: I am an angle. MY SUPPLEMENT IS 3 TIMES MY COMPLEMENT.WHAT ANGLE AM I?

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Question 970496: I am an angle. MY SUPPLEMENT IS 3 TIMES MY COMPLEMENT.WHAT ANGLE AM I?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
A%2BS=180
A%2BC=90
S=3C
Substituting,
A%2B3C=180
A%2BC=90
Subtracting,
A%2B3C-A-C=180-90
2C=90
C=45
S=3%2845%29=135
A%2B45=90
A=45