Bonjour
1 - (1/3 + 5/27)
= (1 x 27) / (1 x 27) - [(1 x 9) / (3 x 9) + 5/27]
= 27/27 - (9/27 + 5/27)
= 27/27 - 14/27
= 13/27
Il reste 13/27
8/13 x 13/27 = 104/351
104/351 pratiquent le tennis.
Donc :
1 - (1/3 + 5/27 + 104/351)
= (1 x 351) / (1 x 351) - [(1 x 117) / (3 x 117) + (5 x 13) / (27 x 13) + 104/351]
= 351/351 - (117/351 + 65/351 + 104/351)
= 351/351 - 286/351
= 65/351
= (13 x 5) / (13 x 27)
= 5/27
5/27 pratiquent le cyclisme.
