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Calculs fractionnaires aidez moi svp
Calculs fractionnaires aidez moi svp

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2 Réponse

  • Réponse :

    effectuer les calculs suivants et écrire le résultat sous la forme  la plus simple possible

    A = 2/3 - (5/6) =  4/6 - (5/6) = - 1/6

    B = - 7/18 + (7/9) = - 7/18 + (14/18) = 7/18

    C = - 3/4) x 8 = (- 3 x 2 x 4)/4 = - 6

    D = 5 + (1/4) = 20/4 + (1/4) = 21/4

    E = 2/3) ÷ (5/9) = (2 x 9)/(3 x 5) = (2 x 3 x 3)/(3 x 5) = 6/5

    F = - 2/5 + (1/3) - (1/15) = - 6/15 + (5/15) - (1/15) = - 2/15

    G = 9 x/5) * (10/3 x) = 3 * 3 x/5)* (2 *5/3 x) = 6

    H = 11/25 + (1/5) x 1/10 = 11/25 + (1/50) = 22/50 + (1/50) = 23/50  

    I = ab/5 ÷ (3 a/15 b) = ab/5 ÷ (3 a/3 x 5b) = ab/5 ÷ (a/5b) = ab x 5b/5a

    I = b²

    J = 48/-7  ÷ (6) = - 48/42 = - 8/7

    K = (1 + (1/3)) ÷ (1 - (1/3)) = (4/3) ÷ 2/3 + = 4 x 3)/(2 x 3) = 2

    L = - 3/7 + 1/5 ÷ (1/10)   ordre de priorité ÷

      = - 3/7 + 10/5 = - 3/7 + (2) = - 3/7 + (14/7) = 11/7

    Explications étape par étape

  • Réponse :

    A = -1/6

    B = 7/18

    C = -6

    D = 21/4

    E = 6/5

    F = -2/15

    G = 6

    H = 23/50

    I = b²

    J = -8/7

    K = 2

    L = 11/7

    Explications étape par étape

    Bonsoir,

    Effectuer les calculs et écrire le résultat sous la forme la plus simple possible :

    A = 2/3 - 5/6

    A = (2 * 2)/(3 * 2) - 5/6

    A = 4/6 - 5/6

    A = -1/6

    B = -7/18 + 7/9

    B = -7/18 + (7 * 2)/(9 * 2)

    B = -7/18 + 14/18

    B = 7/18

    C = -3/4 * 8

    C = -8/4 * 3

    C = -(2 * 4)/4 * 3

    C = -2 * 3

    C = -6

    D = 5 + 1/4

    D = (5 * 4)/4 + 1/4

    D = 20/4 + 1/4

    D = 21/4

    E = 2/3 : 5/9

    E = 2/3 * 9/5

    E = 9/3 * 2/5

    E = (3 * 3)/3 * 2/5

    E = 3 * 2/5

    E = 6/5

    F = -2/5 + 1/3 - 1/15

    F = (-2 * 3)/(5 * 3) + (1 * 5)(3 * 5) - 1/15

    F = -6/15 + 5/15 - 1/15

    F = -2/15

    G = 9x/5 * 10/(3x)

    G = 9x/(3x) * 10/5

    G = (3x * 3)/(3x) * (2 * 5)/5

    G = 3 * 2

    G = 6

    H = 11/25 + 1/5 * 1/10

    H = 11/25 + 1/50

    H = (11 * 2)/(25 * 2) + 1/50

    H = 22/50 + 1/50

    H = 23/50

    I = ab/5 : 3a/(15b)

    I = ab/5 * 15b/(3a)

    I = (ab * 15b)/(3a * 5)

    I = (15a * b²)/(15a)

    I = b²

    J = 48/-7 : 6

    J = 48/-7 * 1/6

    J = -48/42

    J = (-6 * 8)/(6 * 7)

    J = -8/7

    K = (1 + 1/3) : (1 - 1/3)

    K = [(3 * 1)/(3 * 1) + 1/3] : [(3 * 1)/(3 * 1) - 1/3]

    K = (3/3 + 1/3) : (3/3 - 1/3)

    K = 4/3 : (2/3)

    K = 4/3 * 3/2

    K = 4/2 * 3/3

    K = 2

    L = -3/7 + 1/5 : 1/10

    L = -3/7 + 1/5 * 10

    L = -3/7 + 10/5

    L = -3/7 + (5 * 2)/5

    L = -3/7 + 2

    L = -3/7 + (2 * 7)/7

    L = -3/7 + 14/7

    L = 11/7

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