Réponses

2014-08-21T12:16:15+02:00
1/3x + 1 = 2/3 - 1
1/3x = 2/3 - 1 - 1
1/3x = 2/3 - 2
1/3x = 2/3 - 6/3
1/3x = - 4/3
x = - 4/3 x 3/1
x = - 12/3
x = - 4