Réponses

2014-04-04T15:48:54+02:00
A= (4/5 : 2/3) * (1/3 -3/4)
A= (4/5 *3/2) * (4/12 - 9/12)
A= (12/10) * (-5/12)
A= -60/120
A= -1/2