Mathématiques

Question

A=3/5+6/5=           B=5/12+4/3=        C=5/18+1/12 =        D=3/5-6/5=    E=7/4-(-3/2)=     F=-4/3-3/5=  

2 Réponse

  • A= 3/5 + 6/5
    A= 9/5

    B= 5/12 + 4/3
    B= 5/12 + (4*4)/(3*4)
    B= 5/12 + 16/12
    B= 21/12

    C= 5/18 + 1/12
    C= 10/36 + 3/36
    C= 13/36

    D= 3/5 - 6/5
    D= - 3/5

    E= 7/4 - (- 3/2)
    E= 7/4 + 6/4
    E= 11/4

    F= - 4/3 - 4/5
    F= - (4*5)/(3*5) - (4*3)/(5*3)
    F= - 20/15 - 12/15
    F= - 32/15
  • Bonsoir,

    A= 3/5 + 6/5 =
    A= 9/5

    B= 5/12 + 4/3
    B= 5/12 + 3*4/3*4
    B= 5/12 + 12/12
    B= 17/12

    C= 5/18 + 1/12 = 10/36 + 3/36
    C= 13/36

    D= 3/5 - 6/5
    D= -3/5

    E= 7/4 - (-3/2)=
    E= 7/4 + 6/4
    E= 11/4

    F= -4/3 - 3/5
    F= 4*5/3*5 - 4*3/5*3
    F= 20/15 - 12/15
    F=8/15

    bonne soirée

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