latiaprice
latiaprice
13-01-2015
Mathematics
contestada
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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