Réponses

2014-01-26T15:56:50+01:00
Bonjour

4( + 3 ) - ( + 3 ) ( ( - 7)

4 ( -6/5) - [ (-6 / 5) ( -15/-5)
-24/5 - (90/-25)
- 120/ 25 - ( -90/25)
- 120/25  + 90/25 =  - 30/25 = - 6/5