document.write( "Question 112250: The perimeter of a rectangle is 24 cm. Find the value of x.
\n" ); document.write( "length is 3x cm. and width is 3 cm.
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Algebra.Com's Answer #81888 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
Remember, the perimeter of a rectangle is \"P=2W%2B2L\"\r
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\n" ); document.write( "\n" ); document.write( "\"24=2%283%29%2B2%283x%29\" Plug in the given perimeter, length and width\r
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\n" ); document.write( "\n" ); document.write( "\"24=6%2B6x\" Plug in the given perimeter, length and width\r
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\n" ); document.write( "\n" ); document.write( "\"0=6%2B6x-24\"Subtract 24 from both sides\r
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\n" ); document.write( "\n" ); document.write( "\"-6x=6-24\" Subtract 6x from both sides\r
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\n" ); document.write( "\n" ); document.write( "\"-6x=-18\" Combine like terms on the right side\r
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\n" ); document.write( "\n" ); document.write( "\"x=%28-18%29%2F%28-6%29\" Divide both sides by -6 to isolate x\r
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\n" ); document.write( "\n" ); document.write( "\"x=3\" Divide\r
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\n" ); document.write( "\n" ); document.write( "Answer:\r
\n" ); document.write( "\n" ); document.write( "So our answer is \"x=3\"\r
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\n" ); document.write( "\n" ); document.write( "\"3%2A3=9\" Now plug in \"x=3\" into \"3x\"\r
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\n" ); document.write( "\n" ); document.write( "So the width is 9\r
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\n" ); document.write( "\n" ); document.write( "\"P=2W%2B2L\" Start with the given formula\r
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\n" ); document.write( "\n" ); document.write( "\"24=2%289%29%2B2%283%29\" Plug in P=24, W=9 and L=3\r
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\n" ); document.write( "\n" ); document.write( "\"24=18%2B6\" Multiply\r
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\n" ); document.write( "\n" ); document.write( "\"24=24\" Add. Since both sides are equal, our answer is verified.\r
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