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Somma di Numeri Misti con Denominatore Non Comune
Help us caption and translate this video on Amara.org: http://www.amara.org/en/v/B2uM/
Esercizi: http://www.khanacademy.org/exercise/adding_subtracting_mixed_numbers_1 Traduzione in Italiano del video
Adding Mixed Numbers with Unlike Denominators