3, \\ \left [ {1-x<-3} \atop {1-x>3;}} \right.}} \right. \ \left [ {{-x<-4} \atop {-x>2}} \right. \ \left [ {x>4,} \atop {x<-2;}} \right. \ \\ x\in(-\infty;-2)\cup(4;+\infty)." alt="|1-x|>3, \\ \left [ {1-x<-3} \atop {1-x>3;}} \right.}} \right. \ \left [ {{-x<-4} \atop {-x>2}} \right. \ \left [ {x>4,} \atop {x<-2;}} \right. \ \\ x\in(-\infty;-2)\cup(4;+\infty)." align="absmiddle" class="latex-formula">