[tex]\bf \begin{cases}
u=\ \textless \ -5,-9\ \textgreater \ \\
\qquad -8u\\
\qquad -8\ \textless \ -5,-9\ \textgreater \ \\
\qquad \ \textless \ 40,72\ \textgreater \ \\\\
v=\ \textless \ 6,8\ \textgreater \ \\
\qquad 2v\\
\qquad 2\ \textless \ 6,8\ \textgreater \ \\
\qquad \ \textless \ 12,16\ \textgreater \
\end{cases}
\\\\\\
-8u-2v\implies \ \textless \ 40,72\ \textgreater \ ~-~\ \textless \ 12,16\ \textgreater \
\\\\\\
\ \textless \ 40-12~~,~~72-16\ \textgreater \
\implies
\ \textless \ 26~~,~~56\ \textgreater \ [/tex]
