document.write( "Question 945916: A rectangle has a length of 3(x+y) and a width of 3(x-y) .Write an expression for the perimeter of that rectangle .simplify your answer \n" ); document.write( "
Algebra.Com's Answer #577020 by MathLover1(20849)\"\" \"About 
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\n" ); document.write( "A rectangle has a length of \"L=3%28x%2By%29\" and a width of \"W=3%28x-y%29\" \r
\n" ); document.write( "\n" ); document.write( "the perimeter of the rectangle is:\"P=2L%2B2W\"\r
\n" ); document.write( "\n" ); document.write( "\"P=2%2A3%28x%2By%29%2B2%2A3%28x-y%29\"\r
\n" ); document.write( "\n" ); document.write( "\"P=6%28x%2By%29%2B6%28x-y%29\"\r
\n" ); document.write( "\n" ); document.write( "\"P=6x%2B6y%2B6x-6y\"\r
\n" ); document.write( "\n" ); document.write( "\"P=6x%2Bcross%286y%29%2B6x-cross%286y%29\"\r
\n" ); document.write( "\n" ); document.write( "\"P=6x%2B6x\"\r
\n" ); document.write( "\n" ); document.write( "\"P=12x\"
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