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