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