Réponses

2014-03-10T14:18:36+01:00
2014-03-10T14:19:34+01:00
E = -3/4 + 7/4 x 2/3
E = -3/4 + 7 x 2
                  4 x 3
E = -3/4 + 14/12
E = -3 x 3 / 4 x 3 + 14/12
E = -9/12 + 14/12
E = 5/12