Réponses

2014-03-12T13:48:17+01:00
A) 5x/3 = 2/5
 x = 2/5 * 3/5
x = 6/25
b) 3 (x-5) = 4 - (6 + 3x)
  3x -15 = -2 -3x
3x +3x = -2 +15
6x = 13
x= 13/6
Merci beaucoupp :D
de rien , bon apres midi =)
Merci, toi aussi :)
2014-03-12T13:49:35+01:00
Bonjour

a) 5x sur 3 = 2 sur 5
 25x/15 = 6/15
x = 6/25

b) 3 (x-5) = 4 - (6 + 3x)

3x -15 =  4 -6 -3x
3x +3x = 4 -6 +15
6x = 13
x = 13/6