$$ x - \begin{array}{c}
a_{1} \\ \vdots \\ a_{n}
\end{array}
- \begin{array}[t]{cl}
u-v &13 \\
u+v & \begin {array} [b]{r}
12 \\ -345
\end{array}
\end {array} $$
Exclude node summary :
n
Exclude node links:
0
$$ x - \begin{array}{c}
a_{1} \\ \vdots \\ a_{n}
\end{array}
- \begin{array}[t]{cl}
u-v &13 \\
u+v & \begin {array} [b]{r}
12 \\ -345
\end{array}
\end {array} $$