Réponses

  • Utilisateur Brainly
2014-09-11T19:51:09+02:00
3x - 5 = x + 18
3x - x = 18 + 5
2x = 23
x = 23/2

2x/3 = 4x + 1
2x/3 - 4x = 1
- 10/3x = 1
x = - 3/10