document.write( "Question 112693: Solve.\r
\n" ); document.write( "\n" ); document.write( "A triangle has sides 3x + 7, 4x - 9, and 5x + 6. Find the polynomial
\n" ); document.write( "that represents its perimeter.
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Algebra.Com's Answer #82149 by SHUgrad05(58)\"\" \"About 
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Let a=3x + 7; b=4x - 9; c=5x + 6. Find the polynomial
\n" ); document.write( "that represents its perimeter.\r
\n" ); document.write( "\n" ); document.write( "The perimeter of a triangle is: P=a+b+c
\n" ); document.write( "P= 3x+7+4x-9+5x+6
\n" ); document.write( "Now simplify:
\n" ); document.write( "P=12x+4
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