\[\left\{ \begin{matrix} 6x - y + 6 = 0\ \ \ \ | \cdot 5 \\ 4x - 5y + 17 = 0\ \ \ \ \ \ \ \\ \end{matrix} \right.\ \text{\ \ \ \ \ \ }\]
\[\left\{ \begin{matrix} 30x - 5y = - 30 \\ 4x - 5y = - 17\ \ \\ \end{matrix} - \right.\ \text{\ \ \ \ \ \ \ \ \ }\]
\[\left\{ \begin{matrix} 26x = - 13\ \ \ \ \\ y = 6x + 6\ \ \ \ \\ \end{matrix} \right.\ \text{\ \ \ \ \ \ \ \ }\]
\[\left\{ \begin{matrix} x = - 0,5 \\ y = 3\ \ \ \ \ \ \\ \end{matrix} \right.\ \]
\[Ответ:( - 0,5;3).\]