document.write( "Question 513636: the width of a rectangle is 12 units less than length. the perimeter is 108 units. find the length \n" ); document.write( "
Algebra.Com's Answer #343109 by umail08(87)\"\" \"About 
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Let: L=Length and W=Width
\n" ); document.write( "Perimeter = 2L + 2W
\n" ); document.write( "W = L – 12 … width 12 units less than length
\n" ); document.write( "108 = 2L + 2(L-12)
\n" ); document.write( "108 =2L + 2L - 24
\n" ); document.write( "108 = 4L - 24
\n" ); document.write( "108 + 24 = 4L -24 + 24
\n" ); document.write( "132 = 4L
\n" ); document.write( "132/4 = 4L/4
\n" ); document.write( "33 = L
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