Bonjour
1- OK
2- OK
3- Tu dois réduire encore à 5/9
4- 3/2 - 1/20 = 60/20 - 1/20 = 59/20
5- OK
6- Tu dois réduire encore à 1/24
7- 3/2 + 17/7 = 21/14 + 119/14 = 140/14 = 14
8- 4/15 + 8/3 = 4/15 + 40/15 = 44/15
9- OK
10- OK
11- 13/20 - 1/2 = 13/20 - 10/20 = 3/20.
12- 1/2 + 1/2 = 2/2 = 1.
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Bonjour
1- OK
2- OK
3- Tu dois réduire encore à 5/9
4- 3/2 - 1/20 = 60/20 - 1/20 = 59/20
5- OK
6- Tu dois réduire encore à 1/24
7- 3/2 + 17/7 = 21/14 + 119/14 = 140/14 = 14
8- 4/15 + 8/3 = 4/15 + 40/15 = 44/15
9- OK
10- OK
11- 13/20 - 1/2 = 13/20 - 10/20 = 3/20.
12- 1/2 + 1/2 = 2/2 = 1.