\[\left\{ \begin{matrix} 5x + 7 < 4x + 8 \\ 2x + 7 < 0\ \ \ \ \ \ \ \ \ \ \ \\ \end{matrix} \right.\ \text{\ \ \ \ \ \ \ \ \ \ }\]
\[\left\{ \begin{matrix} 5x - 4x < 8 - 7 \\ 2x < - 7\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \\ \end{matrix} \right.\ \text{\ \ \ \ \ \ \ \ }\]
\[\left\{ \begin{matrix} x < 1\ \ \ \ \ \ \ \\ x < - 3,5 \\ \end{matrix} \right.\ \]
\[Ответ:( - \infty; - 3,5).\]