Réponses

2014-09-21T17:28:15+02:00
C = (1/5 - 1/10) x (7 + 7/2)
C = (1 x 2 / 5 x 2 - 1/10) x (7 x 2 / 1 x 2 + 7/2)
C = (2/10 - 1/10) x (14/2 + 7/2)
C = 1/10 x 21/2
C = 21/20
2014-09-21T17:28:20+02:00


C = (1/5 - 1/10) x (7 + 7/2)

C = (2/10 - 1/10) x (7/1 + 7/2)

C = 1/10 x (14/2 + 7/2)

C = 1/10 x 21/2

C = 21/20