Réponses

2014-10-10T22:42:53+02:00
À=2/3-4/3*5/12=2/3-5/9=6/9-5/9=1/9

B=(5/3-9/12)x(3/2-3)=(20/12-9/12)x(3/2-6/2)=11/12x(-3/2)=-33/24=-11*3/8*3=-11/8