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Exercice 25 le a et le b svp. Merci
Exercice 25 le a et le b svp. Merci

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  • bonjour

    A =  7/6 : 3/8

    A =  7/6 x 8/3

    A = 56/18

    A =   28/9

    B = 4/21 : 14/9

    B = 4/21 x 9 /14

    B = 36/294

    B =  6 / 49

  • Bonjour

    A = 7/6 : 3/8

    A = 7/3 x 8/3

    A = 56/9

    B = 4/21 : 14/9

    B = 4/21 x 9/14

    B = 36/294

    B = (6 x 6) / (6 x 49)

    B = 6/49.

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