BREVET

Question

Bjr,mon exercice de maths pose problème donc voici (exo 1)
Bjr,mon exercice de maths pose problème donc voici (exo 1)

0 Commentaire.

1 Réponse

  • Bonjour,

    a. 3/4 = x/12

    9/12 = x/12

    9 = x

    x = 9

    b. x/16 = 3/12

    3x/48 = 12/48

    3x = 12

    x = 12/3

    x = 4

    c. 8/x = 24/15

    120/15x = 24/15

    120x = 24

    x = 24/120

    x = 0,2

    d. 2,1/4 = x/12

    6,3/12 = x/12

    6,3 = x

    x = 6,3.

Autres questions