Réponses

2014-04-12T19:59:53+02:00
2014-04-12T20:00:08+02:00
Bonsoir

7n-(n-11)+11(6+n)
7n - n +11 + 66 + 11n
17n + 77

7n(-11)+11+66+11n
7n - n +11 + 66 + 11n
17n + 77