Mathématiques

Question

help me pour l'exo 3 merci
help me pour l'exo 3 merci

0 Commentaire.

2 Réponse

  • a = 5/3 -2/3  / 5/6
    a = 5/3 -2/3x 6/5
    a = 5/3 - 12/15
    a = 25/15 -12/15
    a = 13/15

    b = (3/5-1/2) x 5/2
    b = ( 6/10 -5/10) x 5/2
    b = 1/10 x5/2
    b = 5/20
    b = 1/4

  • A = 5/3 - 2/3 : 5/6
    A = 5/3 - 2/3 x 6/5
    A = 5/3 - 12/15
    A = 5 x 5 / 3 x 5 - 12/15
    A = 25/15 - 12/15
    A = 13/15

    B = (3/5 - 1/2) x 5/2
    B = (3 x 2 / 5 x 2 - 1 x 5 / 2 x 5) x 5/2
    B = ( 6/10 - 5/10) x 5/2
    B = 1/10 x 5/2
    B = 5/20
    B = 5 x 1 / 5 x 4
    B = 1/4

Autres questions