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24 February, 07:30

Log 15 = log (7 - 4x)

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Answers (2)
  1. 24 February, 07:34
    0
    x = -2

    Step-by-step explanation:

    log 15 = log (7 - 4x)

    The terms inside the log functions must be the same

    15 = 7 - 4x

    Subtract 7 from each side

    15-7 = 7-4x-7

    8 = - 4x

    Divide each side by - 4

    8/-4 = -4x/-4

    -2 = x
  2. 24 February, 07:38
    0
    x = - 2

    Step-by-step explanation:

    log (15) = log (7 - 4x), x < 7/4 15 = 7 - 4x 4x = 7 - 15 4x = - 8 x = - 2
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