\[\left\{ \begin{matrix} 6t - 4 > 2t + 8 \\ t + 9 > 3t - 5\ \ \ \\ \end{matrix} \right.\ \]
\[\left\{ \begin{matrix} 4t > 12 \\ 2t < 14 \\ \end{matrix} \right.\ \]
\[\left\{ \begin{matrix} t > 6 \\ t < 7 \\ \end{matrix} \right.\ \]
\[6 < t < 7.\]