Mathématiques

Question

Pouvez vous m'aider svp
2(3x-4)=-7x+9
(4x-3)-8=5x-(2x-3)

2 Réponse

  • Bonjour,

    2(3x-4)=-7x+9

    6x - 8 = - 7x + 9

    6x + 7x = 9 + 8

    13x = 17

    x = 17/13

    (4x-3)-8=5x-(2x-3)

    4x - 3 - 8 = 5x - 2x + 3

    4x - 5x + 2x = 3 + 3 + 8

    x = 14.

  • 2(3x-4)=-7x+9

    6x - 8 = -7x+9

    6x+ 7x = 9+8

    13x  = 17

    x =17/13

    (4x-3)-8=5x-(2x-3)

    4x - 3 - 8 = 5x - 2x + 3

    4x - 11 = 3x + 3

    4x - 3x = 3 + 11

    x = 14

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