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exercice 43, merci de m‘aider
exercice 43, merci de m‘aider

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  • Bonsoir,

    A = 2/3 + 5/6 - 1/18

    A = (2 x 6) / (3 x 6) + (5 x 3) / (6 x 3) - 1/18

    A = 12/18 + 15/18 - 1/18

    A = 26/18

    A = (2 x 13) / (2 x 9)

    A = 13/9.

    B = 18/5 : 6

    B = 18/5 x 1/6

    B = 18/30

    B = (6 x 3) / (6 x 5)

    B = 3/5.

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