Réponses

2013-12-02T19:30:10+01:00

A=1/9 + 15/9 * 1/6=1/9 + 15/54 =6/54 + 15/54 = 21/54

B=8/5-9/10-2/3-3/4=96/60-54/60-40/60-45/60=-43/60

2013-12-02T19:30:45+01:00