\begin{equation}\frac{x}{7}+\frac{1}{4}=\frac{\frac{81}{28}}{3}\end{equation}

\begin{equation}\frac{8}{x+5}=\frac{4}{x}\end{equation}

\begin{equation}\frac{9}{x+3}=\frac{x}{x+3}\end{equation}

\begin{equation}\frac{15}{x-2}=\frac{x+9}{x-2}\end{equation}

\begin{equation}\frac{8}{3} \times \frac{x}{x+8}=\frac{8}{x+8}\end{equation}

\begin{equation}\frac{4}{x+5}+2=\frac{32}{x+5}\end{equation}

\begin{equation}\frac{4x}{x+6}+7=\frac{x+112}{x+6}\end{equation}

\begin{equation}\frac{2}{x+8}=\frac{\frac{18}{17}}{x}\end{equation}

\begin{equation}\frac{5}{x+10}=\frac{\frac{5}{6}}{x}\end{equation}

\begin{equation}\frac{8}{3x}+\frac{10}{x}=\frac{\frac{608}{21}}{x+9}\end{equation}

\begin{equation}\frac{2}{x}+\frac{3x+10}{x^{2}}=\frac{45}{x^{2}}\end{equation}