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Camillen
@Camillen
April 2019
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Je suis en 3eme et par rapport aux resultats que j'ai ecrit sur la feuille on me demande de deduire : B moin A ; A x B ; A/B
Aidez moi svp:)
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winner123
Verified answer
Bonjour
Déjà, je ne trouve pas la même chose que toi pour l'expression A, pour la B je suis d'accord
A = 2/3 - 2/3 x 9/5
A = 2/3 - 18/15
A = 10/15 -18/15 = -8/15
Donc A = -8/15 et B = -5/9
B - A = -5/9 - (-8/15)
= -5/9 +8/15 =-75/135 + 72/135 = - 3/135 =
-1/45
A x B = -8/15 x -5/9 = 40/135 =
8/27
A : B = -8/15 : - 5/9 = -8/15 x - 9/5 = 40/75 =
8/15
1 votes
Thanks 1
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Lista de comentários
Verified answer
BonjourDéjà, je ne trouve pas la même chose que toi pour l'expression A, pour la B je suis d'accord
A = 2/3 - 2/3 x 9/5
A = 2/3 - 18/15
A = 10/15 -18/15 = -8/15
Donc A = -8/15 et B = -5/9
B - A = -5/9 - (-8/15)
= -5/9 +8/15 =-75/135 + 72/135 = - 3/135 = -1/45
A x B = -8/15 x -5/9 = 40/135 = 8/27
A : B = -8/15 : - 5/9 = -8/15 x - 9/5 = 40/75 = 8/15