Respostas

2014-08-21T21:43:51-03:00
2x - 2 + 3x + 3 = 4x + 8 --> 5x + 1 = 4x + 8 --> 5x - 4x = 8-1 --> x = 7.
  • Usuário do Brainly
2014-08-21T21:46:13-03:00
2 . (x - 1) + 3 . (x + 1) = 4 . (x + 2)
2x - 2 + 3x + 3 = 4x + 8
2x + 3x - 4x = 8 + 2 - 3
x = 7