document.write( "Question 126737: The width of a rectangle is 15 feet less than its length, and the perimeter is 210 feet. Find the width \n" ); document.write( "
Algebra.Com's Answer #92858 by checkley71(8403)\"\" \"About 
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W=L-15
\n" ); document.write( "2L+2W=210
\n" ); document.write( "2L+2(L-15)=210
\n" ); document.write( "2L+2L-30=120
\n" ); document.write( "4L=210+30
\n" ); document.write( "4L=240
\n" ); document.write( "4L=240/4
\n" ); document.write( "L=60 FOR THE LENGTH.
\n" ); document.write( "W=60-15
\n" ); document.write( "W=45 FOR THE LENGTH.
\n" ); document.write( "PROOF: 2*60+2*45=210
\n" ); document.write( "120+90=210
\n" ); document.write( "210=210
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