document.write( "Question 876994: The length of a rectangle is 4 inches less than 3 times the width. The perimeter is 72 inches. Find the length and the width. \n" ); document.write( "

Algebra.Com's Answer #529108 by josgarithmetic(39617) $\"\"$ $\"About$

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L length, w width
\n" ); document.write( "L=3w-4 and 2w+2L=72;
\n" ); document.write( "Perimeter simplifies to $\"w%2BL=36\"$ , then $\"L=36-w\"$ .
\n" ); document.write( "Substitute in L definition:
\n" ); document.write( " $\"36-w=3w-4\"$
\n" ); document.write( " $\"36=4w-4\"$
\n" ); document.write( " $\"40=4w\"$
\n" ); document.write( " $\"highlight%28w=10%29\"$
\n" ); document.write( "Use in L definition, $\"highlight%28L=26%29\"$ . \n" ); document.write( "

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