Réponses

2013-01-18T07:15:29+01:00

(x+2)-(2x-1)-(3x-2)-(x-4)

x+2-2x+1 -3x +2 -x +4

x -2x -3x -x +2 +1 +2 +4

-5x +9

2013-01-18T08:23:59+01:00

(x + 2) - (2x - 1) - (3x - 2) - (x - 4)

x + 2 - 2x + 1 - 3x + 2 - x + 4

- 5x + 9