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4 June, 20:24

7. Solve for x in the equation.

Log27 (x + 7) - Log27 (x - 1) = 2/3

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Answers (1)
  1. 4 June, 21:05
    0
    x = 2

    Step-by-step explanation:

    log27 (x + 7) - log27 (x - 1) = ⅔

    log27[ (x + 7) / (x - 1) ] = ⅔

    (x + 7) / (x - 1) = 27^⅔

    (x + 7) / (x - 1) = 9

    x + 7 = 9 (x - 1)

    x + 7 = 9x - 9

    8x = 16

    x = 2
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