document.write( "Question 143861: Solve by setting up the proper equation to describe the facts given and then carrying out the mathematical calculations to solve for the unknown variable(s).
\n" ); document.write( "The length of a rectangle is 3 times the width. The difference between the length and the width is 8 feet. Determine the rectangle’s width.
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Algebra.Com's Answer #104683 by checkley77(12844)\"\" \"About 
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L=3W
\n" ); document.write( "L-W=8
\n" ); document.write( "3W-W=8
\n" ); document.write( "2W=8
\n" ); document.write( "W=8/2
\n" ); document.write( "W=4 ANSWER FOR THE WIDTH.
\n" ); document.write( "L=3*4
\n" ); document.write( "L=12 ANSWER FOR THEW LENGTH.
\n" ); document.write( "PROOF:
\n" ); document.write( "12-4=8
\n" ); document.write( "8=8
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