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Sagot :

a)10/7;  40/28
b)6 sur 12; 12 sur 8; 36 sur 24
c)15 sur 45;  1sur 3
d)40 sur 64; 20 sur 32; 15 sur 24
 Bonjour

20/14 = 10/7 = 40/28

72/48 = 6/4 = 12/8 = 36/24

15/45 = 30/90 = 1/3

40/64 = 5/8 = 20/32 = 15/24

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