Bonsoir;
1. Calculer la somme
2/5 + 7/5 = 9/5
2. Calculer la différence
20/13 -9/13 =11/13
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Bonsoir;
1. Calculer la somme
2/5 + 7/5 = 9/5
2. Calculer la différence
20/13 -9/13 =11/13