7}} \right. \left \{ {{x<1} \atop {-x<3}} \right. \left \{ {{x<1} \atop {x<-3}} \right. " alt=" \left \{ {{x+5<6} \atop {4-x>7}} \right. \left \{ {{x<1} \atop {-x<3}} \right. \left \{ {{x<1} \atop {x<-3}} \right. " align="absmiddle" class="latex-formula">
Ответ:x∈(-∞;-3)