take the linear coefients easy
11,-12, 7
5,12,-7
so
[tex] \left[\begin{array}{ccc}11&-12&7\\5&12&-7\end{array}\right] [/tex] or you could do also
[tex] \left[\begin{array}{ccc}11&-12\\5&12\end{array}\right] \left[\begin{array}{ccc}7\\-7\end{array}\right] [/tex]
