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23 November, 10:56

Find the value of the expression (3x - 12) - (xy - 10) for x = 3 and y = 6.

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Answers (2)
  1. 23 November, 14:50
    0
    -11

    Step-by-step explanation:

    (3x - 12) - (xy - 10) = ?

    Substitute your values in for x and y.

    [3 (3) - 12] - [ (3) (6) - 10] = ?

    Solve. (Remember, two variables next to each other implies multiplication!)

    (9 - 12) - (18 - 10) = ?

    -3 - 8 = - 11
  2. 23 November, 14:54
    0
    Step-by-step explanation:

    (3x - 12) - (xy - 10) for x = 3 and y = 6

    = {3 (3) - 12} - {3 (6) - 10}

    = (9 - 12) - (18 - 10)

    = - 3 - 8

    = - 11
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