Réponses

2013-05-13T22:01:33+02:00
A= 3a + 5-2a-7+8-5a
A= -4a +6

B= -b +4+3b-2-8b+5
B= -6b + 7

C= 6-5c+3c-4+6c+5+7-2c
C= 10 + 2c

D= d-1-3d-4+5-4d-7d-5+5
D= -13d
2013-05-13T23:54:13+02:00

A= 3a + 5-2a-7+8-5a A= -4a +6
B= -b +4+3b-2-8b+5 B= -6b + 7
C= 6-5c+3c-4+6c+5+7-2c C= 10 + 2c
D= d-1-3d-4+5-4d-7d-5+5 D= -13d

 

 

voila j'espere t'avoir t'aider bonne chance   :)