document.write( "Question 458472: A square plywood has a perimeter which is 7 times the length of a side decreased by 21. Find the length of a side \n" ); document.write( "
Algebra.Com's Answer #314524 by solver91311(24713)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "Let represent the measure of one side. Then the perimeter is by definition and the perimeter is as a given. So:\r
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\n" ); document.write( "\n" ); document.write( "Just solve for .\r
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\n" ); document.write( "\n" ); document.write( "John
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\n" ); document.write( "My calculator said it, I believe it, that settles it
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