Mathématiques

Question

Aidez moi svp équation à résoudre ✅✅✅
Aidez moi svp équation à résoudre ✅✅✅

1 Réponse

  • Bonjour

    43)

    a. 5x + 7 = 2x - 2

    5x - 2x = - 2 - 7

    3x = - 9

    x = - 9/3

    x = - 3

    b. 3x + 2 = x - 10

    3x - x = - 10 - 2

    2x = - 12

    x =  - 12/2

    x = - 6

    44)

    a. 2x - 5 = 5x + 1

    2x - 5x = 1 + 5

    - 3x = 6

    x = - 6/3

    x = - 2

    b.

    3 - 7x = 3x + 2

    - 7x - 3x = 2 - 3

    - 10x = - 1

    x = 1/10

    45)

    a. 5x - 6 = - x + 3

    5x + x = 3 + 6

    6x = 9

    x = 9/6

    x = 3/2

    b. 2x - 1/3 = 1

    2x = 1 + 1/3

    6x = 3 + 1

    6x = 4

    x = 4/6

    x = 2/3.