Ответ:
3-7-4x <15
3-7<-4x<15-7
-4<-4x <8
-8<4x<4
-8/4<x<4/4
-2<x<1
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Ответ:
3-7-4x <15
3-7<-4x<15-7
-4<-4x <8
-8<4x<4
-8/4<x<4/4
-2<x<1