Posted by yasha on Thursday, October 16, 2008 at 7:58pm.
Suppose the lengths of the four side of a quadrilateral are represented by the expressions 3a, a+2, 2a1, and 3a+6. write the sum of the lenghts (the perimeter), and then simplify.

algebra  Ashley, Wednesday, December 16, 2015 at 6:48pm
3a+a+2+2a1+3a+6;9a+7.
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