\[\left\{ \begin{matrix} t - 5 \geq 0\ \ \ \\ 2t - 6 \geq 0 \\ \end{matrix} \right.\ \]
\[\left\{ \begin{matrix} t \geq 5\ \ \ \\ 2t \geq 6 \\ \end{matrix} \right.\ \]
\[\left\{ \begin{matrix} t \geq 5 \\ t \geq 3 \\ \end{matrix} \right.\ \]
\[t \geq 5.\]
\[Ответ:t \geq 5.\]
\[Место\ для\ уравнения.\]