\[\left\{ \begin{matrix} 3x - 10 > - x + 2 \\ 8x - 7 < 3x + 8\ \ \ \\ \end{matrix} \right.\ \text{\ \ \ \ \ \ \ \ }\]
\[\left\{ \begin{matrix} 4x > 12 \\ 5x < 15 \\ \end{matrix} \right.\ \text{\ \ \ \ \ \ \ \ }\]
\[\left\{ \begin{matrix} x > 3 \\ x < 3 \\ \end{matrix} \right.\ \]
\[Ответ:нет\ решений.\ \]