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Sagot :

Bonjour,

9/21 +5/21 =  14/21 = 2/3

15/8 - 10/8 = 5/8

23/100 - 15/100= 8/100 =  4/50 = 2/25

23/44 - 20/44 = 3/44

4/4 - 7/4 = -3/4

11/9 - 6/9 = 5/9

14/10 + 11/10 = 25/10 = 5/2

20/26 -11/26 =  9/26

6/3 + 5/3 = 11/3

22/7 - 21/7 = 1/7

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