SOLUTION: the perimeter of a triangle is 16cm.the sides are x+3,2x+3,.find the other side?

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Question 833182: the perimeter of a triangle is 16cm.the sides are x+3,2x+3,.find the other side?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Let S be the unknown side.
%28x%2B3%29%2B%282x%2B3%29%2BS=16
3x%2B6%2BS=16
S=10-3x