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Fie multimea a={-5,-3,-1,0,4} si. b={-5,-1,0,7}. Atunci a\b={...}
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Răspuns :

A-B={-3,4}................... Deoarece scaderea inseamna ce e in A si nu in B B-A={7}
A={-5,-3,-1,0,4}
B={-5,-1,0,7}
B-A={7}
A-B={-3,4}