Bonjour,
10)
b) 4/3 et - 5/- 4
4/3 = (4 x 4) / (3 x 4) = 16/12
- 5/- 4 = 5/4 = (5 x 3) / (4 x 3) = 15/12
Donc : 4/3 > - 5/ - 4
c) 9/10 et 11/12
9/10 = (9 x 12) / (10 x 12) = 108/120
11/12 = (11 x 10) / (12 x 10) = 110/120
Donc : 9/10 < 11/12.
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Bonjour,
10)
b) 4/3 et - 5/- 4
4/3 = (4 x 4) / (3 x 4) = 16/12
- 5/- 4 = 5/4 = (5 x 3) / (4 x 3) = 15/12
Donc : 4/3 > - 5/ - 4
c) 9/10 et 11/12
9/10 = (9 x 12) / (10 x 12) = 108/120
11/12 = (11 x 10) / (12 x 10) = 110/120
Donc : 9/10 < 11/12.