\[\left\{ \begin{matrix} x - y = 5\ \ \ \ \ \\ x + 2y = - 1 \\ \end{matrix} \right.\ \Longrightarrow \left\{ \begin{matrix} y = x - 5\ \ \ \ \ \ \\ 2y = - x - 1 \\ \end{matrix} \right.\ \Longrightarrow\]
\[\Longrightarrow \left\{ \begin{matrix} y = x - 5\ \ \ \ \ \ \ \ \ \ \ \ \ \\ y = - 0,5x - 0,5 \\ \end{matrix} \right.\ \]
\[y = x - 5\]
\[x\] | \[2\] | \[3\] |
---|---|---|
\[y\] | \[- 3\] | \[- 2\] |
\[y = - 0,5x - 0,5\]
\[x\] | \[- 1\] | \[- 3\] |
---|---|---|
\[y\] | \[0\] | \[1\] |
\[Ответ:(3;\ - 2)\text{.\ }\]