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inconnum
@inconnum
June 2021
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Calculer ces deux fractions . Merci !
5/12 + 7/18 et 3/20 - 5/12 .
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pan59
Bonjour.
Il suffit de réduire au même dénominateur.
5/12+7/18 = 15/36+14/36 = 29/36
3/20-5/12 = 9/60-25/60 = -16/60 = -8/30 = -4/15
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caro67000
1) 5/12+ 7/18 = 15/36 + 14/36 = 29/36 ( il faut trouver le même dénominateur commun aux deux fractions)
2) 3/20 - 5/12 = 9/60 - 25/60 = - 16/60 = - 4/15 ( trouver le même dénominateur commun puis simplifier)
1 votes
Thanks 2
caro67000
Merci à toi!
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Il suffit de réduire au même dénominateur.
5/12+7/18 = 15/36+14/36 = 29/36
3/20-5/12 = 9/60-25/60 = -16/60 = -8/30 = -4/15
2) 3/20 - 5/12 = 9/60 - 25/60 = - 16/60 = - 4/15 ( trouver le même dénominateur commun puis simplifier)