\[\left\{ \begin{matrix} x + 2y = - 10 \\ 0,25y - x = 1 \\ \end{matrix} \right.\ \Longrightarrow \left\{ \begin{matrix} 2y = - x - 10 \\ 0,25y = x + 1 \\ \end{matrix} \right.\ \Longrightarrow\]
\[\Longrightarrow \left\{ \begin{matrix} y = - 0,5x - 5 \\ y = 4x + 4\ \ \ \ \ \ \ \\ \end{matrix} \right.\ \]
\[Ответ:( - 2; - 4).\]