\[\left\{ \begin{matrix} 8x - 32 < 0\ \ \ \ \\ - 3x + 15 > 0 \\ \end{matrix} \right.\ \Longrightarrow \left\{ \begin{matrix} 8x < 32 \\ 3x < 15 \\ \end{matrix} \right.\ \Longrightarrow \left\{ \begin{matrix} x < 4 \\ x < 5 \\ \end{matrix} \right.\ \]
\[Ответ:( - \infty;4).\]