Mathématiques

Question

Résoudre chaque équation :

5x - 8 = 3x
4x = 3 - 2x
X = 4x - 6

Merci !

2 Réponse

  • 5x - 8 = 3x
    5x - 3x = 8
    2x = 8
    x = 8/2
    x = 4

    4x = 3 - 2x
    4x + 2x = 3
    6x = 3
    x = 3/6
    x = 1/2

    x = 4x - 6
    6 = 4x - x
    6 = 3x
    6/3 = x
    2 = x
  • Bonjour


    5x - 8 = 3x

    5x - 3x = 8

           2x = 8

           x = 8/2

           x = 4


     4x = 3 - 2x

    4x + 2x = 3

           6x = 3

            x = 3/6

            x = 1/2


     X = 4x - 6

    x - 4x = -6

          -3x = -6    

     x = -6/-3

     x = 6/3

     x = 2

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