\begin{equation}\frac{x+8}{x+4}+\frac{x+4}{x+6}=0\end{equation}

\begin{equation}\frac{6}{x+2}=x+9\end{equation}

\begin{equation}\frac{10}{x}=\frac{x}{9}+\frac{9}{x}-(\frac{x}{10})\end{equation}

\begin{equation}\frac{7}{3x+8}=4-(\frac{5}{7x+4})\end{equation}

\begin{equation}\frac{x}{x-9}=\frac{82}{9}-(\frac{x-9}{x})\end{equation}

\begin{equation}\frac{4}{6x+3}=9-(4x+7)\end{equation}