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Dau coroana, ajutati ma :
Determinati multimile :
1. D= { x apartine Z | -9/x apartine N

2. D= X apartine Z | 3x-2/x+1
apartine Z


Răspuns :

DAca Calculati: 
D10 ∩D8,
D -10 ∩D15,
D6∩D0,
M2∩M4,
M -5∩M3