Réponses

2014-08-28T18:37:53+02:00
a) x -3= 0
X-3+3 = 0+3
X= 3

b) 7+ x=0
7+x-7 =0-7
x= -7

c) 5x = -2
5x/5 =-2/5
x= -0,4

e) 3x =0

3x/3 = 0/3
x=0
  • Utilisateur Brainly
2014-08-28T18:45:17+02:00
Résoudre les équations :

a) x - 3 = 0
x = 3

b) 7 + x = 0
x = - 7

c) 5x = - 2
x = -2/5

3x = 0
x = 0/3
x = 0

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