Matematika

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Tolong di bantu yah no 3 ( A ,B , C,D)

terima kasih
Tolong di bantu yah no 3 ( A ,B , C,D) terima kasih

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  • A
    24m = 12
    m = 12/24
    m = 1/2

    B
    3z + 11 = -28
    3z = -28 - 11
    3z = -39
    z = -39/3
    z = -13

    C
    25 - 4y = 6y + 15
    -4y - 6y = 15 - 25
    -10y = -10
    y = -10/-10
    y = 1

    D
    ⅓ (x - 2) = ⅔ x - 13/3
    (x - 2)/3 = (2x - 13)/3
    3 (x - 2) = 3 (2x - 13)
    3x - 6 = 6x - 39
    3x - 6x = -39 + 6
    -3x = -33
    x = -33/-3
    x = 11

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