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Calculați : 2(×-1)<-6

Răspuns :

2x-2<-6 => 2x-2+6 <0 => 2x+4 < 0 => 2x <-4 => x < -4/2 => x <-2 x apartine ( - infinit, -2 )
2x-2=-6

2x=-6+-2

2x=-8

x=-8:2

x=-4