Réponses

2014-09-05T14:46:03+02:00
7x-8 = 3x+2
7x-3x-8+8 = 3x-3x+2+8
4x = 10
x = 10/4
x = 5/2
2014-09-05T15:05:16+02:00
7x - 8 = 3x + 2
7x - 3x = 2 + 8
4x = 10
x = 10/4
x = 5/2
x = 2,5