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A={-3,-1,0,1,2,3}
B={-4,0,2,4}
AUB,A U intors B, A/B,B/A


Răspuns :

aub=-4, -3,-1,0,1,2,3,4,

a ⊃b=0,2

a-b=-3,-1,,0,1,3

b-a=-4,4