Question

Rezolvati in Z inecuatiile
a) 4(x+2)>sau egal -8
b) 5(x-1) < 0
c) 2(x+5) +3<-8
2.Rezolvati in Z_ inecuatiile
a) 3x>-80
b) 5x<1
c) 2x < sau egal -3

Answer 1

x-2>-2 x>0 S={0... infinit}
x-1<0 x<1 S={-infinit...0}
2(x+5)<-11 x+5<5,5 x<0,5 S={-infinit...0,4}
x>26,6 S={26,7... infinit}
x<0,2 S={-infinit...0,1}
x<-1,5 S={-infinit...-1,5}