document.write( "Question 971585: Please, I need help onto solve this: On a rectangle, if the length is 5 less than 3 times the width, and the area is 112 cm, what is an equation to help you find the sides of the rectangle. Please help, thank you. \n" ); document.write( "
Algebra.Com's Answer #594013 by MathLover1(20850)\"\" \"About 
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On a rectangle, \r
\n" ); document.write( "\n" ); document.write( "if the length \"L\" is \"5\" less than \"3\" times the width \"W\", then\r
\n" ); document.write( "\n" ); document.write( "\"L=3W-5\"....eq.1\r
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\n" ); document.write( "\n" ); document.write( "and if the area \"A=L%2AW\"is \"112cm%5E2\", then\r
\n" ); document.write( "\n" ); document.write( "\"L%2AW=112\"....eq.2............substitute \"L\" from eq.1\r
\n" ); document.write( "\n" ); document.write( "\"%283W-5%29%2AW=112\"......solve for \"W\"\r
\n" ); document.write( "\n" ); document.write( "\"3W%5E2-5W=112\"....factor...write \"-5W\" as \"-21W%2B16W\"\r
\n" ); document.write( "\n" ); document.write( "\"3W%5E2-21W%2B16W-112=0\"......group\r
\n" ); document.write( "\n" ); document.write( "\"%283W%5E2-21W%29%2B%2816W-112%29=0\"\r
\n" ); document.write( "\n" ); document.write( "\"3W%28W-7%29%2B16%28W-7%29=0\"\r
\n" ); document.write( "\n" ); document.write( "\"%283W%2B16%29%28W-7%29=0\"\r
\n" ); document.write( "\n" ); document.write( "solutions: since we have a rectangle, we will need only positive solution and that is \"+%28W-7%29=0\"=>\"highlight%28W=7cm%29\"\r
\n" ); document.write( "\n" ); document.write( "now go to eq.1 and solve for \"L\"\r
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\n" ); document.write( "\n" ); document.write( "\"L=3%2A7-5\"....eq.1\r
\n" ); document.write( "\n" ); document.write( "\"L=21-5\"\r
\n" ); document.write( "\n" ); document.write( "\"highlight%28L=16cm%29\"\r
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