Réponses

  • Utilisateur Brainly
2014-05-08T20:49:49+02:00
14x + 21 =
7(2x+3)

-12x+15 =
3(-4x+5)

33x-44 =
11(3x-4)

2014-05-08T20:53:00+02:00
14x + 21 = 7*2x + 7*3 = 7 (2x + 3)
- 12x + 15 = - 3*4x + 3*5 = 3 (-4x + 5)
33x - 44 = 11*3x - 11*4 = 11 (3x - 4)