document.write( "Question 456455: If the perimeter of a certain rectangle is 78cm. and the width is 12cm., what is the length?\r
\n" ); document.write( "\n" ); document.write( "P=2w + 2l\r
\n" ); document.write( "\n" ); document.write( "So, my equation looks like this: 78 = 12w + 2l (I'm not even sure that's right)\r
\n" ); document.write( "\n" ); document.write( "This is what I came up with:\r
\n" ); document.write( "\n" ); document.write( "I am trying to isolate L.....
\n" ); document.write( "78 = 12w + 2l
\n" ); document.write( "---------------
\n" ); document.write( "2 2 \r
\n" ); document.write( "\n" ); document.write( "At this point I get confused as to what to do next.....please help? \r
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Algebra.Com's Answer #313259 by zeti68(10)\"\" \"About 
You can put this solution on YOUR website!
Hi,
\n" ); document.write( "P=2w + 2L
\n" ); document.write( "78 = 2(12) + 2L
\n" ); document.write( "78=24+2L
\n" ); document.write( "78-24=2L
\n" ); document.write( "54=2L
\n" ); document.write( "54/2=L
\n" ); document.write( "L=27\r
\n" ); document.write( "\n" ); document.write( "Answer
\n" ); document.write( "length=27cm
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