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Gamze18
@Gamze18
April 2019
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Bonjour, je n'ai pas compris l'exercice 44, je sais faire à 2 fractions mais pas à 3.
Infos : On voit tous l'endroit déchirer à juste enlever le " b) " et la page. merci d'avance.
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maudmarine
Verified answer
Bonjour,
a. 13/12 - 3/2 x 1/3
= 13/12 - 3/6
= 13/12 - 3 x 2 / 6 x 2
= 13/12 - 6/12
= 7/12
b. 8 - 5 x 3/7
= 8 - 15/7
= 8 x 7 / 1 x 7 - 15/7
= 56/7 - 15/7
= 41/7
c. 2/9 + 7/9 x 11/2
= 2/9 + 77/18
= 2 x 2 / 9 x 2 + 77/18
= 4/18 + 77/18
= 81/18
= 9 x 9 / 9 x 2
= 9/2
d. 11/12 x 4 - 4 x 2/3
= 44/12 - 8/3
= 4 x 11 / 4 x 3 - 8/3
= 11/3 - 8/3
= 3/3
= 1
1 votes
Thanks 1
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pour l'exercice 12 urgent, merci d'avance!
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exercice 70, urgent merci d'avance!
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exercice 35 36 37 merci d'avance. :)
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Bonsoir c'est pour l'exercice 44 en maths merci
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Bonjour je dois faire cette fiche en anglais pour demain svp merci d'avance.
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Bonsoir je fais l'exercice 5 je ne comprend pas merci en avance
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Verified answer
Bonjour,a. 13/12 - 3/2 x 1/3
= 13/12 - 3/6
= 13/12 - 3 x 2 / 6 x 2
= 13/12 - 6/12
= 7/12
b. 8 - 5 x 3/7
= 8 - 15/7
= 8 x 7 / 1 x 7 - 15/7
= 56/7 - 15/7
= 41/7
c. 2/9 + 7/9 x 11/2
= 2/9 + 77/18
= 2 x 2 / 9 x 2 + 77/18
= 4/18 + 77/18
= 81/18
= 9 x 9 / 9 x 2
= 9/2
d. 11/12 x 4 - 4 x 2/3
= 44/12 - 8/3
= 4 x 11 / 4 x 3 - 8/3
= 11/3 - 8/3
= 3/3
= 1