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a)Bogdan are 400$ in bancnote de 5$ si 20$, in total 35 de bancnote.Cate bancnote de fiecare fel sunt?

b)Irina are 400€ in bancnote de 10 € si 20 € , in total 28 bancnote .Cate bancnote de fiecare fel sunt?




Va rog frumos!!!!!Ofer coroana!!