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Chihuahua13
@Chihuahua13
May 2019
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Bonjour jai cet exercice a faire pour lundi et je ny arrive pas , merci enormement a ceux qui m’aideront :)
1. calculer en detaillant les etapes : = (4 - 11 25
— — X —
5 3 43
B = – 7 + 3 X –2
— — —
12 4 9
2. Un opérateur doit installer un cable de fibre d’une longueur de 8 456 m.
Les techniciens ont deja installé les 3/7 de cette longueur du cable
Quelle longueur leur reste-til a installer ?
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Verified answer
Bonjour
A = ( 4/5 - 11/3) * 25/43
= ( 12/15 - 55/15) * 25/43
= - 43/15 *25/43
= - 25/15 =
- 5/3
B = - 7/12 + 3/4 * - 2/9
= - 7/12 - 6/36
= - 21/36 - 6/36
= - 27/36
= - 3/4
8 456 * 3/7 = 3 624
3 624 m sont déjà installés donc restent
4 832 m
2 votes
Thanks 1
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BonjourA = ( 4/5 - 11/3) * 25/43
= ( 12/15 - 55/15) * 25/43
= - 43/15 *25/43
= - 25/15 = - 5/3
B = - 7/12 + 3/4 * - 2/9
= - 7/12 - 6/36
= - 21/36 - 6/36
= - 27/36
= - 3/4
8 456 * 3/7 = 3 624
3 624 m sont déjà installés donc restent 4 832 m