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13-12-2017
Mathematics

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Solve for x 27=9^x-1

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andriansp andriansp

13-12-2017

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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