\[\left\{ \begin{matrix} 7x - 9 > 5x + 1 \\ 4x - 3 < x - 6\ \ \ \\ \end{matrix} \right.\ \text{\ \ \ \ \ \ \ \ }\]
\[\left\{ \begin{matrix} 2x > 10\ \\ 3x < - 3 \\ \end{matrix} \right.\ \text{\ \ \ \ \ \ \ \ \ \ }\]
\[\left\{ \begin{matrix} x > 5\ \ \ \\ x < - 1 \\ \end{matrix} \right.\ \]
\[Ответ:\ нет\ решений.\]