Réponses

2014-09-06T12:16:28+02:00
A= - 6 / 8 = -3 / 4
B= 17 / 4x3 - 11x4 / 3x4 = 17/12 - 44/12 = - 27/12
C = 9/12 - 16/12 = - 7/12
D = 12/6 + 5/6 - 21/6 = 17/6 - 21/6 = - 4/6 = - 2/3