SOLUTION: triangle has sides 3x + 7 and 4x - 9 and 5x- 7 find the expression that represents the perimeter

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Question 45384: triangle has sides 3x + 7 and 4x - 9 and 5x- 7 find the expression that represents the perimeter
Answer by rapaljer(4671) About Me  (Show Source):
You can put this solution on YOUR website!
Add up the three sides:
3x+ 7 + 4x -9 + 5x - 7

Combine like terms:
12x -9

R^2 at SCC