latiaprice latiaprice

13-01-2015
Mathematics

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3^x-5=81
Exponential equation

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konrad509 konrad509

13-01-2015

I assume it's [tex]3^{x-5}[/tex]

[tex]3^{x-5}=81\\ 3^{x-5}=3^4\\ x-5=4\\ x=9[/tex]

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