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13 January, 01:50

Given f (x) = 8x - 15, find x when f (x) = 9.

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Answers (2)
  1. 13 January, 01:52
    0
    x=3

    Step-by-step explanation:

    Move all terms that don't contain x to the right side and solve.

    x = 3
  2. 13 January, 01:59
    0
    f (x) = 8x - 15

    9 = 8x - 15

    3 (3) = 8x - 15

    9 = 8 (3) - 15

    9 = 24 - 15

    9 = 9
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