Réponses

2014-08-27T14:47:22+02:00
79/5 = 75/5 +4/5
79/5 =15X5+0,8X5
79/5 =15+0.8
=15.8

Donc 79/5 = 15.8
2014-08-27T14:52:42+02:00
79/5 = 80/5 -1/5

80/5 = 16
- 1/5 = -0,2
16-0,2 = 15.8.