Réponses

2014-05-25T18:22:11+02:00
3/10+5/100
= 3*10/10*10 + 5/100
= 30/100+5/100
= 35/100
= 5*7/5*20
= 7/20

* signifie multiplié par
2014-05-25T18:26:53+02:00
3/10 + 5/100
= 3 x 10 / 10 x 10 + 5/100
= 30/100 + 5/100
= 35/100
= 5 x 7 / 5 x 20
= 7/20