zakupem

In a sentence

• Jestem zadowolony z mojego zakupu nowego komputera.

  I am satisfied with my purchase of a new computer.

  Here, 'zakupu' is in the genitive case, referring to possession.

• Dzięki zakupowi mieszkania mogłem wreszcie się wprowadzić.

  Thanks to the purchase of the apartment, I was finally able to move in.

  Here, 'zakupowi' is in the dative case, indicating purpose or reason.

• Spotkałem się z problemami związanymi z zakupem sprzętu naukowego.

  I faced problems related to the purchase of scientific equipment.

  Here, 'zakupem' is in the instrumental case, describing a relation or association.