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zimovet [89]
3 years ago
6

Help I do not understand

Mathematics
1 answer:
tamaranim1 [39]3 years ago
5 0
\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}

get their LCD, like you'd with any other fractions, and add them up
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