Réponses

2012-11-26T16:30:28+01:00

A=2/15+2/12

8/60+10/60

18/60

3/10

B=3/13+7/39

9/39+7/39

16/39

C=-1/5+(-3)/2

-2/10+(-15)/10

-17/10

D=9+7/6-17

16/-11