Εξισώσεις στις οποίες άγνωστος είναι ο προσθετέος

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Age: 11
Level: 1
Language: Greek (modern) (el)
ID: 7131502
13/08/2023
Country code: GR
Country: Greece
School subject: Maths (1085334)
Main content: equation (2174926)

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