\begin{equation}\frac{10x^{2}}{10} \times \frac{9}{x}\end{equation}

\begin{equation}\frac{8x}{x-8} \times \frac{2(x-8)}{2x}\end{equation}

\begin{equation}\frac{x+4}{x+8} \times \frac{x+8}{x+3}\end{equation}

\begin{equation}\frac{9(x+4)}{x+3} \times \frac{5(x+3)}{9}\end{equation}

\begin{equation}\frac{64x^{2}}{56} \times \frac{7}{512x^{5}}\end{equation}

\begin{equation}\frac{16}{2(x+5)} \times \frac{4(x+5)}{28}\end{equation}

\begin{equation}\frac{x+8}{8(x+7)} \times \frac{x+7}{x^{2}+16x+64}\end{equation}

\begin{equation}\frac{5x}{16x^{2}-1} \times \frac{4x^{2}+29x+7}{40}\end{equation}

\begin{equation}\frac{5(x+6)}{x^{2}+12x+36} \times (x+6)(x+9)\end{equation}

\begin{equation}\frac{49x^{2}y^{5}}{x^{3}} \times \frac{2x^{2}}{6y}\end{equation}

\begin{equation}\frac{64x^{2}}{10} \times \frac{5}{512x^{5}}\end{equation}

\begin{equation}\frac{5}{5(x+10)} \times (x^{2}+15x+50)\end{equation}

\begin{equation}\frac{7(x+9)}{2} \times \frac{6x}{x+9}\end{equation}

\begin{equation}\frac{10x^{2}+xy^{3}}{y^{3}} \times \frac{3(xy+9y)}{x^{2}+9x}\end{equation}