Réponses

  • VTB
  • Ambitieux
2012-06-12T16:54:48+02:00

    -5-x = 2x+3

-5-x -3 = 2x+3 -3

   -2-x = 2x

  -2-x+x= 2x+x

  -2 = 3x

  -2/3 = x



2012-06-12T17:32:54+02:00