rapid vă rog dau coroană la primul care lăspunde

Răspuns:
A={-3,-2,-1,0,1,2}
B={-6,-5,-4,-3}
C={-7,-6,-5}
D={-4,-3,-2,-1,0}
E={0,1,2,3,4}
F={-5,-4,-3,-2,-1,0,1,2,3,4,5}
La A
X-necunoscuta, mai mic sau egal decit -3 si mai mica decit 2