Réponses

2013-02-24T11:46:17+01:00

3x+2= -4*7

3x = -28

x = -28/3

 

3x/8 + x/12 = -5/9 +7/6

9x/24 + 2x/24 = -10/18 +21/18

11x/24 = 11/18

x = 24/18 = 4/3

 

(5+8x)-(3-2x) = 9-8(7x-6)

5+8x - 3 + 2x = 9 - 56x + 48

10x + 2 = -56x + 57

56x + 10x = 57-2

66x = 55

x = 55/66 = 5/6

 

En espérant t'avoir aidé.

 

2013-02-24T11:47:25+01:00