Mathématiques

Question

A=5/18-(3/36-1/36)

b=17/12-(11/12-1/3)

c=11/6-2/3+1/6

d=23/8-3/4-1/2

2 Réponse


  • A= 5/18 - (3/36 - 1/36)

    A= 5/18 - 2/36

    A= 5x2 / 18x2 - 2/36

    A= 10/36 - 2/36

    A= 8/36

    A= 2/9


    B=17/12 -  (11/12 - 1/3)

    B= 17/12 - (11/12 - 1x4 / 3x4)

    B= 17/12 - (11/12 - 4/12)

    B= 17/12 - 7/12

    B= 10/12

    B= 5/6


    C= 11/6 - 2/3  + 1/6

    C= 11/6 + 1/6 - 2/3

    C= 12/6 - 2/3

    C= 12/6 - 2x2 / 3x2

    C= 12/6 - 4/6

    C= 8/6

    C= 4/3


    D= 23/8 - 3/4 - 1/2

    D= 23/8 - 3x2 / 4x2 - 1x4 / 2x4

    D= 23/8 - 6/8 - 4/8

    D= 17/8 - 4/8

    D= 13/8


  • A = 5/18-(3/36-1/36)
    A = 5/18 - 2/36
    A = 10/36 - 2/36
    A = 8/36
    A = 2/9

    B = 17/12-(11/12-1/3)
    B = 17/12 - (11/12 - 4/12)
    B = 17/12 - 7/12
    B = 10/12
    B = 5/6

    C = 11/6-2/3+1/6
    C = 11/6 - 4/6 +1/6
    C = 8/6
    C = 4/3

    D = 23/8-3/4-1/2

    D = 23/8 - 6/8 - 4/8
    D = 13/8

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