Решите систему неравенств {7х+9<2х-1 {4+11х>9х-14

Решите задачу:

$\begin{cases} & \text{ } 7x+9\ \textless \ 2x-1 \\ & \text{ } 4+11x\ \textgreater \ 9x-14 \end{cases}\Rightarrow\begin{cases} & \text{ } 7x-2x\ \textless \ -1-9 \\ & \text{ } 11x-9x\ \textgreater \ -14-4 \end{cases}\Rightarrow\\ \\ \Rightarrow\begin{cases} & \text{ } 5x\ \textless \ -10 \\ & \text{ } 2x\ \textgreater \ -18 \end{cases}\Rightarrow\begin{cases} & \text{ } x\ \textless \ -2 \\ & \text{ } x\ \textgreater \ -9 \end{cases}\,\,\,\, \Rightarrow \,\,\,\boxed{x \in (-9;-2)}$