Réponses

2013-09-19T18:40:59+02:00
7/5 + 8x3/15x2 - 19/2 = 7/5 + 2x4x3/5x3x2 + 19/2 = 7/5 + 4/5 + 19/2 = 11/5 + 19/2 = 11x2/5x2 + 19x5/5x2 = 22/10 + 95/10 = (22+95)/10 = 117/10 = 11,7
Il ya une erreur c'est 22/10-95/10 = -73/10 = -7,3