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margotcastaing
@margotcastaing
January 2021
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Calculer chaque expression .ON donnera le resultat sous la forme d'une fraction simplifiée au maximum
A: 2__ - 5__- 1__+ 2__+ 8__- 3__
3 7 3 7 3 7
B:3__- 1__+ 1__- 2__+ 7__- 1__
4 6 4 3 6 3
pense à regrouper astucieusement les termes
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winner123
Verified answer
Bonsoir
je fais la A et tu tâcheras de faire la B
a = 2/3 - 5/7 - 1/3 + 2/7 + 8/3 - 3/7
il faut mettre au même dénominateur commun qui sera 21
a = 14/21 - 15/21 - 7/21 + 6/21 + 56/21 - 9/21
a = 76/21 - 31/21
a = 45/21 = 15/7
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Verified answer
Bonsoirje fais la A et tu tâcheras de faire la B
a = 2/3 - 5/7 - 1/3 + 2/7 + 8/3 - 3/7
il faut mettre au même dénominateur commun qui sera 21
a = 14/21 - 15/21 - 7/21 + 6/21 + 56/21 - 9/21
a = 76/21 - 31/21
a = 45/21 = 15/7