Réponses

2012-12-05T19:21:13+01:00

(2/3x + 1/3) (1/4x + 1/10) =0


2/3x + 1/3= 0

2x + 1/3 - 1/3 = 0 -1/3

2/3x = 0- 1/3

x= .... :-)