Mathématiques

Question

pourriez vous m'aider svp merci
pourriez vous m'aider svp merci

2 Réponse

  • 1)
    11x + 2 = 8x + 17
    11x - 8x = 17 - 2
    3x = 15
    x = 15/3
    x = 5

    2)
    7x + 1 = - 4 - 3x
    7x + 3x = - 4 - 1
    10x = - 5
    x = - 5/10
    x = - 1/2
    x = - 0,5

    3)
    3 (x - 2) = 6 (x + 4)
    3x - 6 = 6x + 24
    3x - 6x = 24 + 6
    - 3x = 30
    x = - 30/3
    x = - 10
  • 1) 11x-8x = -2+17
     3x=15
    x = 5

    2) 7x+3x = -1-4
    10x = -5
    x =-5/10  =-1/2

    3) 3x-3 = 6x+24
    3x-6x = 24+6
    -3x =30
    x =-30/3 = -10