7\\\begin{cases}x+3>7\\x+3<-7\end{cases}\Rightarrow\begin{cases}x>4\\x<-10\end{cases}\Rightarrow x\in(-\infty;\;-10)\cup(4;\;+\infty)" alt="|x+3|>7\\\begin{cases}x+3>7\\x+3<-7\end{cases}\Rightarrow\begin{cases}x>4\\x<-10\end{cases}\Rightarrow x\in(-\infty;\;-10)\cup(4;\;+\infty)" align="absmiddle" class="latex-formula">