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Sagot :

REGINEGALMAR

Réponse :

a. 5/7 - 9/14 = 10/14  - 9/14 = 1/14

b. 1/2 + 1/4 = 2/4 + 1/4 = 3/4

c. 1/2 - 1/6 = 3/6 - 1/6 = 2/6 = 1/3

d. 5/6 - 8.5/24 = 20/24 - 8.5/24 = 11.5

Explications étape par étape
bonsoir!
1. 5/7-9/14 = 10-9/14 = 1/14
2. 1/2+1/4 = 2+1/4 = 3/4
3. 1/2-1/6 = 3-1/6 = 2/6 qu’on peut arrondir à 1/3
4. 5/6-8,5/24 = 5/6-17/2/24 = 5/6-17/48 = 23/48

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