Posted by **Aimee** on Thursday, February 22, 2007 at 12:11am.

A triangle has sides 3x + 7, 4x – 9, and 5x + 6. Find the equation that represents its perimeter

I believe you put each equation which represents a side in parenthesis:

(3x + 7) + (4x – 9) + (5x + 6)

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