Réponses

2014-09-18T18:05:04+02:00
5(x-1) - 2(2x-1) = 3 - x
5x - 5 - 4x + 2 = 3 - x
x - 3 = 3 - x
2x = 6
x = 3
2014-09-18T18:06:25+02:00
5(x - 1) - 2 (2x - 1) = 3 - x 5x - 5 - 4x + 2 = 3 - x
5x - 4x + x = 5 - 2 + 3
2x = 6
x = 6/2
x = 3