My Math Forum Rational Expression

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 April 8th, 2015, 08:47 AM #1 Member   Joined: Mar 2015 From: KY Posts: 35 Thanks: 1 Rational Expression C is the correct answer, but I can't work it out to get it. Can anyone help?
 April 8th, 2015, 09:03 AM #2 Math Team   Joined: Jul 2011 From: Texas Posts: 2,818 Thanks: 1463 $\displaystyle \frac{1}{1-2x} - \frac{1}{2-x}$ common denominator is $(1-2x)(2-x)$ ... $\displaystyle \frac{1(2-x)}{(1-2x)(2-x)} - \frac{1(1-2x)}{(2-x)(1-2x)}$ finish it

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