Réponses

Meilleure réponse !
2014-10-08T16:34:55+02:00
3 - 26/15
2 + 2/15
= 3 x 15 / 1 x 15 - 26/15
   2 x 15 / 1 x 15 + 2/15
= 45/15 - 26/15
   30/15 + 2/15
= 19/15 : 32/15
= 19/15 x 15/32
= 285/480
= 15 x 19 / 15 x 32
= 19/32