-15\end{cases}\Rightarrow\begin{cases}x\leq5\\x>-3\end{cases}\\\\OTBET:\;x\in(-3;\;5]" alt="\begin{cases}x\leq15-2x\\9-5x<24\end{cases}\Rightarrow\begin{cases}x+2x\leq15\\-5x<24-9\end{cases}\Rightarrow\begin{cases}3x\leq15\\5x>-15\end{cases}\Rightarrow\begin{cases}x\leq5\\x>-3\end{cases}\\\\OTBET:\;x\in(-3;\;5]" align="absmiddle" class="latex-formula">