document.write( "Question 96378This question is from textbook Merrill Algebra 1
\n" ); document.write( ": A regular playground is 60 meters longer that is is wide. It is enclosed by 920 meters of fencing. Find its length. \n" ); document.write( "
Algebra.Com's Answer #70168 by checkley71(8403)\"\" \"About 
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l=w+60
\n" ); document.write( "perimeter=2l+2w
\n" ); document.write( "920=2(w=60)+2w
\n" ); document.write( "920=2w+120+2w
\n" ); document.write( "4w=920-120
\n" ); document.write( "4w=800
\n" ); document.write( "w=800/4
\n" ); document.write( "w=200 meters id the width.
\n" ); document.write( "l=200+60=260 is the length.
\n" ); document.write( "proof
\n" ); document.write( "920=2*200=2*260
\n" ); document.write( "920=400+520
\n" ); document.write( "920=920
\n" ); document.write( "
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