Réponses

2014-09-18T19:00:36+02:00
Lundi x, mardi x +12, mercredi x + 24, jeudi x+36, vendredi x+ 48, samedi x+60? dimanche x+72 7x + (12+24+36+48+60+72) = 707 7x + 252 = 707 7x = 707 - 252 7x = 455 x = 455/7 x= 65 tu as vendu 65 paquets le lundi