Bonjour, c'est urgent pour demain svp :

EXO : Reduire les expressions :

A = -10x - 5 - 4 - 6x + x + 8 + 10 - 5
B = -8y + 9x - 8 - 2y - 7x - 4y + 5x - 8 - 6x
C = -10y + 10y - 2y - 5 + y - 6 - 2x - 9
D = -x + 4 + 4 + 10y + 9y - 10y - 8y + 2y

2

Réponses

2014-09-07T14:01:02+02:00
A = -10x - 5 - 4 - 6x + x + 8 + 10 - 5
A = -15x + 4

B = -8y + 9x - 8 - 2y - 7x - 4y + 5x - 8 - 6x
B = x - 14y - 16

C = -10y + 10y - 2y - 5 + y - 6 - 2x - 9
C = -2x -y -20

D = -x + 4 + 4 + 10y + 9y - 10y - 8y + 2y
D = -x + 3y + 8

2014-09-07T14:09:03+02:00
Bonjour

A = -10x - 5 - 4 - 6x + x + 8 + 10 - 5
A = -10x - 6x + x - 5 - 4 + 8 - 5
A = -15x + 4

B = -8y + 9x - 8 - 2y - 7x - 4y + 5x - 8 - 6x
B = -8y - 2y - 4y + 9x - 7x + 5x - 6x - 8 - 8
B = x - 14y - 16

C = -10y + 10y - 2y - 5 + y - 6 - 2x - 9
C = -10y + 10y - 2y + y - 2x - 5 - 6  - 9
C = -2x -y -20

D = -x + 4 + 4 + 10y + 9y - 10y - 8y + 2y
D = -x + 10y + 9y - 10y - 8y + 2y + 4 + 4
D = -x + 3y + 8