document.write( "Question 297349: can you show the steps of solving this problem by cross multiplying (7-2n)/(7+2n)=1/18 \n" ); document.write( "
Algebra.Com's Answer #214132 by jim_thompson5910(35256)\"\" \"About 
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\"%287-2n%29%2F%287%2B2n%29=1%2F18\" Start with the given equation.\r
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\n" ); document.write( "\n" ); document.write( "\"18%287-2n%29=1%287%2B2n%29\" Cross multiply\r
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\n" ); document.write( "\n" ); document.write( "\"126-36n=7%2B2n\" Distribute.\r
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\n" ); document.write( "\n" ); document.write( "\"-36n=7%2B2n-126\" Subtract \"126\" from both sides.\r
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\n" ); document.write( "\n" ); document.write( "\"-36n-2n=7-126\" Subtract \"2n\" from both sides.\r
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\n" ); document.write( "\n" ); document.write( "\"-38n=7-126\" Combine like terms on the left side.\r
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\n" ); document.write( "\n" ); document.write( "\"-38n=-119\" Combine like terms on the right side.\r
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\n" ); document.write( "\n" ); document.write( "\"n=%28-119%29%2F%28-38%29\" Divide both sides by \"-38\" to isolate \"n\".\r
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\n" ); document.write( "\n" ); document.write( "\"n=119%2F38\" Reduce.\r
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\n" ); document.write( "\n" ); document.write( "Answer:\r
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\n" ); document.write( "\n" ); document.write( "So the solution is \"n=119%2F38\" which approximates to \"n=3.132\".
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