Răspuns:
Explicație pas cu pas:
A={/x/<5} unde x apartine Z => orice /-x/=x =>
A={ 4,3,2,1,0,-1,-2,-3,-4,-5,5}
B={3,4,5,6,-3,-4,-5,-6}
C={2x+1<-5} =>
C={ x<-3}
C={-4,-5,-6,-7,-8,..........-infinit}
D={x+2<-6} =>
D={x<-8}
D={-9,-10,-11,.........-infinit}
