2/5 + 3/10 = 2x2/5x2 + 3/10 = 4/10 + 3/10 = 7/10 L M
Donia a deja lu 7/10 du livre
7/10 - 10/10 = 3/10
elle lui reste a lire 3/10 du livre
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2/5 + 3/10 = 2x2/5x2 + 3/10 = 4/10 + 3/10 = 7/10
L M
Donia a deja lu 7/10 du livre
7/10 - 10/10 = 3/10
elle lui reste a lire 3/10 du livre