Urgent !!1 Aflati multimea A si B si rezolvare acestuia (cum ai facut) daca :

A=[x £ Z | 12/2x-1 £ Z | 
B=[x £ N | 15/3x-5 £ Z | 

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£ ==> apartine numerelor ........
/ ===> fractie

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Va rog mult ajutati-ma