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Sagot :

Bonjour

a. - 4,5/- 5 = 10/20

car 10 = (4,5 x 4) et 20 = (5 x 4)

b. 2/3 = 18/27

car 2 x 9 = 18

c. - 15/45 = - 5/15

car 15 = (5 x 3) et 45 = (15 x 3).

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