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Rezolvati in Z : 2(x+5)+3<-9 .

Răspuns :

2(x+5)+3<-9
2x+10+3<-9
2x+13<-9
2x<-13-9
2x<-22
x<-22/2 (-22 supra 2)
x<-11
x apartine (-infinit , -11]