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Yaya2001
@Yaya2001
April 2019
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Calcule et donne le résultat sous la forme d'une fraction la plus simple possible
A= 3/4+5/24
B = 5/6 - 3/48
C = 5 x 2/3 - 1/3
D = 7/4 - 3/4 x 3/2
E = (5/6 + 7/12) x 3/5
F= 3/4 x 2/9 + 28/15 x 25/14
Merci beaucoup pour votre aide, mon fils a du mal avec les fractions.
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maudmarine
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Calcule et donne le résultat sous la forme d'une fraction la plus simple possible
A = 3/4 + 5/24 = 8/24 = 8 x 1 / 8 x 3 =
1/3
B = 5/6 - 3/48 = 5 x 8 / 6 x 8 - 3/48 = 40/48 - 3/48 =
37/48
C = 5 x 2/3 - 1/3 = 10/3 - 1/3 = 9/3 = 3 x 3 / 3 x 1 =
3/1
D = 7/4 - 3/4 x 3/2 = 7/4 - 9/8 = 7 x 2 / 4 x 2 - 9/8 = 14/8 - 9/8 =
5/8
E = (5/6 + 7/12) x 3/5 = (5 x 2 / 6 x 2 + 7/12) x 35 = (10/12 + 7/12) x 3/5 = 17/12 x 3/5 =
51/60
F = 3/4 x 2/9 + 28/15 x 25/14
= 6/36 + 700/210 = 6/36 + 10 x 70 / 3 x 70 = 6/36 + 10/3 = 6/36 + 10 x 12 / 3 x 12 = 6/36 + 120/36 = 126/36 = 18 x 7 / 18 x 2 =
7/2
4 votes
Thanks 15
maudmarine
Oui j'ai oublié d'ajouter 5/24 pardon. Sinon Toutes les modifications sont notées en détail
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Bonjour, Pouvez vous m'aider SVP, c'est urgent je n'y comprends rien du tout ! Merci
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Pouvez vous aider mon fils SVP Merci beaucoup
Responda
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Calcule et donne le résultat sous la forme d'une fraction la plus simple possibleA = 3/4 + 5/24 = 8/24 = 8 x 1 / 8 x 3 = 1/3
B = 5/6 - 3/48 = 5 x 8 / 6 x 8 - 3/48 = 40/48 - 3/48 = 37/48
C = 5 x 2/3 - 1/3 = 10/3 - 1/3 = 9/3 = 3 x 3 / 3 x 1 = 3/1
D = 7/4 - 3/4 x 3/2 = 7/4 - 9/8 = 7 x 2 / 4 x 2 - 9/8 = 14/8 - 9/8 = 5/8
E = (5/6 + 7/12) x 3/5 = (5 x 2 / 6 x 2 + 7/12) x 35 = (10/12 + 7/12) x 3/5 = 17/12 x 3/5 = 51/60
F = 3/4 x 2/9 + 28/15 x 25/14 = 6/36 + 700/210 = 6/36 + 10 x 70 / 3 x 70 = 6/36 + 10/3 = 6/36 + 10 x 12 / 3 x 12 = 6/36 + 120/36 = 126/36 = 18 x 7 / 18 x 2 = 7/2