\[\left\{ \begin{matrix} 5x - 3y = 11\ \ \ \ | \cdot 2 \\ 2x - 4y = 3\ \ \ \ \ \ | \cdot 5 \\ \end{matrix} \right.\ \text{\ \ \ \ \ \ \ }\]
\[\left\{ \begin{matrix} 10x - 6y = 22\ \ \ \\ 10x - 20y = 15 \\ \end{matrix} - \right.\ \text{\ \ \ \ \ \ \ \ \ }\]
\[\left\{ \begin{matrix} 14y = 7\ \ \ \ \ \ \ \ \\ x = \frac{11 + 3y}{5} \\ \end{matrix} \right.\ \text{\ \ \ \ \ \ \ \ \ \ \ \ \ }\]
\[\left\{ \begin{matrix} y = 0,5 \\ x = 2,5 \\ \end{matrix} \right.\ \]
\[Ответ:(2,5;0,5).\]