luna34
luna34
06-02-2017
Mathematics
contestada
Help I do not understand
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jdoe0001
jdoe0001
06-02-2017
[tex]\bf \begin{cases} f(x)=\cfrac{x}{x-9} \\ \quad \\ g(x)=\cfrac{-x}{x-3} \end{cases}\qquad f(x)+g(x)\implies \cfrac{x}{x-9}+\cfrac{-x}{x-3}[/tex]
get their LCD, like you'd with any other fractions, and add them up
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