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9 January, 00:28

Solve for x 27=9^x-1

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  1. 9 January, 00:34
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    27 = 9^x-1

    3^3 = 9^x-1

    3^3 = 3^2 (x-1)

    3 = 2 (x-1)

    1.5 = x-1

    x = 2.5
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