Bonjour
A 1/4 3/8
1/4 = (1 x 2) / (4 x 2) = 2/8
Donc : 1/4 < 3/8
B 5/3 10/6
5/3 = (5 x 2) / (3 x 2) = 10/6
Donc : 5/3 = 10/6
C 7/4 4/7
7/4 = (7 x 7) / (4 x 7) = 49/28
4/7 = (4 x 4) / (7 x 4) = 16/28
Donc : 7/4 > 4/7
D 8/3 32/12
8/3 = (8 x 4) / (3 x 4) = 32/12
Donc : 8/3 = 32/12
E 20/5 12/3
20/5 = (20 x 3) / (5 x 3) = 60/15
12/3 = (12 x 5) / (3 x 5) = 60/15
Donc : 20/5 = 12/3
F 9/12 3/4
3/4 = (3 x 3) / (4 x 3) = 9/12
Donc : 9/12 = 3/4.
