document.write( "Question 594387: I am trying to figure out the formula I need to use for the following math word problem....\r
\n" ); document.write( "\n" ); document.write( "Find the length and width of a rectangle with the length being 3 cm less than twice the width. The parameter is 36.\r
\n" ); document.write( "\n" ); document.write( "I know P = 2L+2W\r
\n" ); document.write( "\n" ); document.write( "But I can not remember the formula or what I need to add into the formula to get the width then the length.\r
\n" ); document.write( "\n" ); document.write( "Thanks \n" ); document.write( "
Algebra.Com's Answer #376712 by nerdybill(7384)\"\" \"About 
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Find the length and width of a rectangle with the length being 3 cm less than twice the width. The parameter is 36.
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\n" ); document.write( "Since they don't tell you the width, create a variable to hold it:
\n" ); document.write( "Let W = width
\n" ); document.write( "then from \"the length being 3 cm less than twice the width\" we get
\n" ); document.write( "2W-3 = length
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\n" ); document.write( "P = 2L+2W
\n" ); document.write( "36 = 2(2W-3)+2W
\n" ); document.write( "dividing both sides by 2:
\n" ); document.write( "18 = (2W-3)+W
\n" ); document.write( "18 = 3W-3
\n" ); document.write( "21 = 3W
\n" ); document.write( "7 cm = W (width)
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\n" ); document.write( "Length:
\n" ); document.write( "2W-3 = 2(7)-3 = 14-3 = 11 cm
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