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Bonsoir, exercice 15 svp :)
Bonsoir, exercice 15 svp :)

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  • 25x - 12 = 3 + 20x
    25x - 20x = 3 + 12
    5x = 15
    x = 15/5
    x = 3

  • Exercice 15 :

    25x - 12 = 3 + 20x
    25x - 20x = 3 + 12
    (25 - 20)x = 15
    5x = 15
    x = 15/5
    x = (5 * 3)/ 5
    x = 3

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