Réponses

2014-09-06T11:29:44+02:00
4/7 = - 2x/5
20/35 = - 14x/35
14x = - 20
x = - 20/14
  • Utilisateur Brainly
2014-09-06T12:39:42+02:00
4/7 = - 2x/5 -> produits en croix.
20 = - 14x
- 20/14 = x
- 10/7 = x

S= {- 10/7}