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Rational ExpressionC is the correct answer, but I can't work it out to get it. Can anyone help? http://images.tapatalk-cdn.com/15/04...8c65225d14.jpg |

$\displaystyle \frac{1}{1-2x} - \frac{1}{2-x}$ 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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