# How do you solve #9^n + 10 + 3 = 81 #?

##### 1 Answer

May 7, 2015

Using the definition of logarithm:

I change the base to natural logarithm to evaluate it with a pocket calculator:

May 7, 2015

Using the definition of logarithm:

I change the base to natural logarithm to evaluate it with a pocket calculator:

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