6.
a) 8<8,3<9
b) -9<-8,3<8
c) 0<0,7<1
d) -1<-0,7<0
7) |a|≤3⇒a∈{-3,-2,-1,0,1,2,3}
|b|=2⇒b∈{-2,2}
Fractiile de forma a supra b sunt:
[tex] \frac{-3}{-2}, \frac{-2}{-2}, \frac{-1}{-2}, \frac{0}{-2}, \frac{1}{-2}, \frac{2}{-2}, \frac{3}{-2}, \frac{-3}{2}, \frac{-2}{2}, \frac{-1}{2}, \frac{0}{2}, \frac{1}{2}, \frac{2}{2}, \frac{3}{2}[/tex]
Dupa simplificari, In ordine crescatoare:
[tex]- \frac{3}{2}, -1, -\frac{1}{2}, 0, \frac{1}{2}, 1, \frac{3}{2}[/tex]
