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Mathematics, 08.03.2021 17:50 ayoismeisalex

Ana are 500 de bile roșii și verzi. Dorind să aibă numai bile roșii, ea face schimb cu prietena ei, Bianca. Aceasta îi oferă 5 bile roșii pentru fiecare 13 bile verzi. După mai multe schimburi Ana are 300 de bile roșii. Câte bile roșii a avut inițial Ana?

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