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Sagot :

Bonjour,

8/7-(10/7-149/168)

= (8 x 24) / (7 x 24) - [(10 x 24) / (7 x 24) - 149/168]

= 192/168 - (240/168 - 149/168)

= 192/168 - 91/168

= 101/168.

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