Réponses

2013-04-01T16:40:12+02:00

B = 2/3 : 5/-3 + 3/5

B = 2/3 * -3/5 + 3/5

B = 2*-3 / 3*5 + 3/5

B = -6/15 + 3*3/5*3

B = -6/15 + 6/15

B = 0