document.write( "Question 980378: The perimeter of a triangle is7p-8p+9.find the third side of the triangle if ist side is2p-p+1 and 2nd side is11p-3p+5 \n" ); document.write( "
Algebra.Com's Answer #601513 by josgarithmetic(39620)\"\" \"About 
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Unknown side is length u.
\n" ); document.write( "\"2p-p%2B1%2B11p-3p%2B5%2Bu=7p-8p%2B9\".
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