Item1.2.5.2.d

\begin{equation*} \left[ \begin{array}{rrrr|r} 0 \amp 0 \amp 1 \amp 0 \amp -1 \\ 0 \amp 1 \amp 0 \amp 0 \amp 3 \\ 1 \amp 1 \amp 1 \amp 1 \amp 2 \\ \end{array} \right] \end{equation*}
in-context