Mathématiques

Question

Aidez Moi Svp ... Exercice 70 ... merci
Aidez Moi Svp ... Exercice 70 ... merci

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2 Réponse

  • A = 12/5 -3/5 x 7/9
    A = 12/5 - 3/5 x 7/3*3
    A = 12/5 - 7/15
    A = 36/15 -7/15
    A = 29/15

    B = ( 2/3 -3) + 1/9
    B =( 2/3 -9/3) +1/9
    B =-7/3 +1/9
    B = -21/9 +1/9
    B =  -20/9

  • A= 12/5
    A= 12/5-3/5*7/3*3
    A= 12/5-7/15
    A= 36/15-7/15
    A= 29/15

    Donc A= 29/15

    B= ( 2/3-3) + 1/9
    B= (2/3-9/3) + 1/9
    B = -7/3+1/9
    B= -21/9+1/9
    B= -20/9

    Donc B=-20/9



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