\[\left\{ \begin{matrix}
- 2x + y = 3 \\
3x - y = 1\ \ \ \\
\end{matrix} \right.\ \text{\ \ \ \ \ \ }\]
\[\left\{ \begin{matrix}
y = 3 + 2x\ \ \ \ \ \ \ \ \ \ \ \ \ \ \\
3x - (3 + 2x) = 1 \\
\end{matrix} \right.\ \text{\ \ \ \ \ }\]
\[\left\{ \begin{matrix}
y = 3 + 2x\ \ \ \ \ \ \ \ \ \ \ \ \ \\
3x - 3 - 2x = - 1 \\
\end{matrix} \right.\ \text{\ \ \ }\]
\[\left\{ \begin{matrix}
x = 2\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \\
y = 3 + 2 \cdot 2 = 7 \\
\end{matrix} \right.\ \]
\[Проверка:\ \]
\[\left\{ \begin{matrix}
- 2 \cdot 2 + 7 = 3 \\
3 \cdot 2 - 7 = - 1 \\
\end{matrix} \right.\ \text{\ \ \ \ \ \ }\]
\[\left\{ \begin{matrix}
3 = 3\ \ \ \ \ \ \ \\
- 1 = - 1 \\
\end{matrix} \right.\ \Longrightarrow верно.\]
\[Ответ:(2;7).\]