Réponses

2013-05-21T18:56:47+02:00

1)  4/5= (4*4)/(5*4)= 16/20

 

2)  1.25= 5/4 = (5*3)/(4*3)= 15/12

 

3) 45/135= (9*5)/(27*5)= 9/27

 

4) 0.85= 17/20

 

5) 17/6 = 2 + (5/6)