Ese_2
[latex]\displaystyle \left\{\begin{array}
x+y+z=0 \\
2x-y=1 \\
y-4z=-3
\end{array} \right.
[/latex]
[latex]\left( \begin{array}{l}
n \\
k \\
\end{array} \right)[/latex]
Ese_2
\begin{array}
x+y+z=0 \\
2x-y=1 \\
y-4z=-3
\end{array} \right.
[/latex]
n \\
k \\
\end{array} \right)[/latex]