Réponses

2014-09-21T17:13:37+02:00

Bonjour


B = 7/5 - 1/5 x 2/11

B = 7/5 - 2/55

B = 77/55 - 2/55

B = 75/55

B = 15/11

2014-09-21T17:14:27+02:00
B = 7/5 - 1/5 x 2/11
B = 7/5 - 2/55
B = 7 x 11 / 5 x 11 - 2/55
B = 77/55 - 2/55
B = 75/55
B = 5 x15 / 5 x 11
B = 15/11