Réponses

2014-05-04T14:44:22+02:00
A) 2/3 : 3/5
= 2/3*5/3
= 10/9

b) 9/11: 4/3
=9/11* 3/4
= 27/44

c) -2/7: 3/7
= -2/7* 7/3
= -2/3

d) 4/3: 4/-7
= 4/3*-7/4
= -7/3

e) -2: 9/8
= -2*8/9
= -16/9

dsl  le dernier en voit pas