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charlineperseval
@charlineperseval
January 2021
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Bonjour j'ai un petit probleme avec un exo de maths je vous ai mis un fichier pour que vous voyez l'exercice (devoirs (5eme-calcul-fraction)
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maudmarine
Verified answer
Bonsoir,
a. 2/3 x 3/7 x 5/11
= 6/21 x 5/11
= 30/231
= 3 x 10 / 3 x 77
= 10/77
b. 3/5 x 13/7 x 5/2
= 39/35 x 5/2
= 195/70
= 5 x 39 / 5 x 14
= 39/14
c. 3/2 x 2/5 x 3/11
= 6/10 x 3/11
= 18/110
= 2 x 9 / 2 x 55
= 9/55
d. 6/5 x 1/14 x 7/3
= 6/70 x 7/3
= 42/210
= 42 x 1 / 42 x 5
= 1/5
e. 45/6 x 1/9 x 18/7
= 45/48 x 18/7
= 810/336
= 6 x 135 / 6 x 56
= 135/56
Le reste tu le repostes
1 votes
Thanks 1
charlineperseval
Merci beaucoup aurevoir
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Verified answer
Bonsoir,a. 2/3 x 3/7 x 5/11
= 6/21 x 5/11
= 30/231
= 3 x 10 / 3 x 77
= 10/77
b. 3/5 x 13/7 x 5/2
= 39/35 x 5/2
= 195/70
= 5 x 39 / 5 x 14
= 39/14
c. 3/2 x 2/5 x 3/11
= 6/10 x 3/11
= 18/110
= 2 x 9 / 2 x 55
= 9/55
d. 6/5 x 1/14 x 7/3
= 6/70 x 7/3
= 42/210
= 42 x 1 / 42 x 5
= 1/5
e. 45/6 x 1/9 x 18/7
= 45/48 x 18/7
= 810/336
= 6 x 135 / 6 x 56
= 135/56
Le reste tu le repostes