Réponses

2013-03-03T11:43:42+01:00

Ex1

5/8 = 20/32

21/56 = 3/8

3/7 = 9/21 = 15/35 = 27/63

 

Ex2

3/15 = 1/5

25/44 = 5/10 = 1/2

20/80 = 2/8 = 1/4

45/81 = 5/9

 

Ex3

6/22 > 4/22 donc 3/11 > 4/22

11/12 < 12/12 donc 11/12 < 1

15/21 = 15/21 donc 5/7 = 15/21

10/45 > 8/45 donc 2/9 > 8/45

 

Ex4

4/12 10/12 11/12 3/12 16/12

 

16/12 > 11/12 > 10/12 >  4/12 > 3/12

donc :

4/3 > 11/12 > 5/6 > 1/3 > 1/4

 

Ex5

7/6 + 1/6 = 8/6 = 4/3

2 + 1/7 = 14/7 + 1/7 = 15/7

 

En espérant t'avoir aidé.