Mathématiques

Question

aidez moi svp
[tex]2x + 4 = 17[/tex]
[tex]5x = 32 - 3x[/tex]
[tex] - 3 - 4x = 7[/tex]
[tex]x + 1 = 3x - 4[/tex]
[tex] \frac{6.6 }{x} = \frac{2}{3} [/tex]

1 Réponse

  • bonsoir

    2 x + 4 = 17

    2 x = 17 - 4 = 13

    x = 13/2

    5 x = 32 - 3 x

    5 x + 3 x = 32

    8 x = 32

    x = 4

    - 3 - 4 x = 7

    - 4 x = 7 + 3

    - 4 x = 10

    x = - 10/4 =  - 5 /2

    x + 1 = 3 x -  4

    x - 3 x = - 4 - 1

    - 2 x =  - 5

    x = 5 /2

    6.6 / x = 2./

    2 x = 19.8

    x = 19.8 /2  

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