Réponses

2013-11-16T09:44:13+01:00
(4x+3)-(x+5) = 3x-2

7x-(3+4x) = 3x-3 = 3(x-1)

(3+4x)-7x = 3-3x = 3(-x+1)

6x-3-(3x-6) = 3x+3 = 3(x+1)

-(4x+5)-(-x) = -3x+5


5x+3-(-3+5x) = 5x+3+3-5x = 6



2013-11-16T09:55:02+01:00
(4x+3)-(x+5)
4x+3-x-5=3x-2

7x-(3+4x)
7x-3-4x=3x-3

(3+4x)-7x
3+4x-7x=-3x+3

6x-3-(3x-6)
6x-3-3x+6=3x+3

-(4x+5)-(-x)
-4x-5+x=-3x-5

5x+3-(-3+5x)
5x+3+3-5x=6