Mathématiques

Question


2(x + 3) = 13
3x = 2x + 5
4x + 2 = x + 11
5x - 1 = 7x - 1
Quelqu'un peut m'aider ?​

2 Réponse

  • Réponse:

    2(x + 3) = 13

    2x+6=13

    2x=7

    x=7/2

    3x = 2x + 5

    x=5

    4x + 2 = x + 11

    3x=9

    x=3

    5x - 1 = 7x - 1

    -2x=0

    x=0/-2

    x=0

  • Réponse :

    bonjour

    2(x + 3) = 13

    2x +6 = 13

    2x = 13 - 6

    2x = 7

    x = 7/2

    3x = 2x + 5

    3x - 2x = 5

    x = 5

    4x + 2 = x + 11

    4x -x  +2 = 11

    3x = 11-2

    3x = 9

    x = 9/3

    x=3

    5x - 1 = 7x - 1

    5x-7x -1 = - 1

    -2x -1 = -1

    -2x = -1 +1

    -2x = 0

    x = 0

    voila ;)

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