\begin{equation}3x+8y=6\textrm{ },\textrm{ }(-3)x+2y=10\end{equation}

\begin{equation}x+4y=6\textrm{ },\textrm{ }-x+10y=-9\end{equation}

\begin{equation}3x-5y=-6\textrm{ },\textrm{ }8x+5y=4\end{equation}

\begin{equation}\frac{1}{7} \times x-\frac{3}{7} \times y=-(\frac{8}{7})\textrm{ },\textrm{ }(-(\frac{1}{7})) \times x+3y=2\end{equation}

\begin{equation}8x-9y=-2\textrm{ },\textrm{ }2x+9y=9\end{equation}

\begin{equation}x+7y=-8\textrm{ },\textrm{ }-x+3y=-2\end{equation}

\begin{equation}4x+y=-7\textrm{ },\textrm{ }9x-y=-4\end{equation}

\begin{equation}4x+10y=9\textrm{ },\textrm{ }4x+6y=4\end{equation}

\begin{equation}(-12)x+2y=10\textrm{ },\textrm{ }2x+10y=5\end{equation}

\begin{equation}5x+6y=6\textrm{ },\textrm{ }7x+2y=5\end{equation}

\begin{equation}8x+y=8\textrm{ },\textrm{ }(-3)x+y=-10\end{equation}

\begin{equation}8x-4y=-2\textrm{ },\textrm{ }2x=8+4y\end{equation}

\begin{equation}x-7y=2\textrm{ },\textrm{ }(-8)x=7y+10\end{equation}

\begin{equation}(-2)x+9y=9\textrm{ },\textrm{ }20x-y=-7\end{equation}

\begin{equation}y-7x=6\textrm{ },\textrm{ }3y-x=7\end{equation}

\begin{equation}(-2)x+y=0\textrm{ },\textrm{ }9x+6y=-8\end{equation}