Réponses

2013-09-08T18:34:20+02:00
B=1+4t-2-t=-1+3t
C=2-(3+4x)=2-3-4x=-1-4x
D=x-1-(2x-3)=x-1-2x+3=-x+2
Meilleure réponse !
2013-09-08T18:34:34+02:00
B = 1 + 4t - 2 - t
B = 4t - t - 2 + 1
B = 3t - 1.

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

D = x - 1 - (2x - 3)
D = x - 1 - 2x + 3
D = x - 2x - 1 + 3
D = - x + 2.