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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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