Mathématiques

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L’exercice 41 svp merci
L’exercice 41 svp merci

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  • Bonsoir,

    L = - 4/7 x 5/6 x - 3/7

    L = - 20/42 x - 3/7

    L = 60/294

    L = (6 x 10) / (6 x 49)

    L = 10/49

    M = (5/8 - 7/6) x (8/5 - 3/35)

    M = [(5 x 3) / (8 x 3) - (7 x 4) / (6 x 4)] x [(8 x 7) / (5 x 7) - 3/35]

    M = (15/24 - 28/24) x (56/35 - 3/35)

    M = - 13/24 x 53/35

    M = - 689/840.

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