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9 September, 18:36

Find "?"

7x + ? + 3 - 9 = - 4 x - 6

-19y + ? + 15 = - 25y + 18

-7z + ? - z + 14 = -5z + 14

4 x - 11y + ? = - 11 x - 10y

-25x + z + ? = - 23x - 13z - 11

7y + ? - 18 = 16y + 3x - 32

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Answers (1)
  1. 9 September, 19:44
    0
    p = - 11x

    q = - 6y + 3

    r = 3z

    s = - 15x + y

    t = 2x - 14z - 11

    u = 9y + 3x - 14

    Step-by-step explanation:

    Let, 7x + p + 3 - 9 = - 4x - 6

    ⇒ p = - 4x - 6 - 7x + 9 - 3

    ⇒ p = - 11x (Answer)

    Let, - 19y + q + 15 = - 25y + 18

    ⇒ q = - 25y + 19y + 18 - 15

    ⇒ q = - 6y + 3 (Answer)

    Let, - 7z + r - z + 14 = - 5z + 14

    ⇒ r = - 5z + 7z + z = 3z (Answer)

    Let, 4x - 11y + s = - 11x - 10y

    ⇒ s = - 11x - 4x - 10y + 11y

    ⇒ s = - 15x + y (Answer)

    Let, - 25x + z + t = - 23x - 13z - 11

    ⇒ t = - 23x + 25x - 13z - z - 11

    ⇒ t = 2x - 14z - 11 (Answer)

    Let, 7y + u - 18 = 16y + 3x - 32

    ⇒ u = 16y - 7y + 3x - 32 + 18

    ⇒ u = 9y + 3x - 14 (Answer)
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