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Sagot :

Bonjour,

B)

2-5/8 = 16/8 - 2/8 = 14/8 = 7/4

7/4 * 4/3 = 28/12 = 14/6 = 7/3

C)

4/5 -2 = 4/5 - 10/5 = - 6/5

3/4 - 2/3 =  9/12 - 8/12 = 1/12

-6/5 * 1/12 = -6/60 = -1/10

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