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hirondelle52

Bonjour;

A)

11/9 *7*7 = 77/63

11/9 = 77/63

b)

18/ 3 =6

45/3 = 15

18/45 = 6/15

c)

52/4 =13

100/4 = 25

13/25 = 52/100

D)

7*6 = 42

5*6 = 30

42/30 = 7/5

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