Multimea A:
|2×-3|<=5
-5<=2×-3<=5
-2<=2×<=8
-1<=×<=4
x exista in multimea Z rezulta ca x={-1,0,1,2,3,4}
Multimea B:
(×-2)/(×+2) exista in multimea Z
x+2|×-2(1)
×+2|×+2(2)
(1),(2) se rezulta ×+2|x-2-x-2
x+2|-4
x+2 exista in D-4={-1,4,-4,1,2,-2}
x={-3,2,-6,-1,0,-4}
A reunit cu B={-6,-4,-3,-1,0,1,2,3,4}
A\B={1,3,4}
