SOLUTION: Solve log(n+9)=log 4n

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Question 445740: Solve log(n+9)=log 4n
Answer by lwsshak3(11628) About Me  (Show Source):
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Solve log(n+9)=log 4n
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log(n+9)=log 4n
log(n+9)-log 4n=0
log((n+9)/4n)=0
convert to exponential form: (base raised to log of number=number)
10^0=(n+9)/4n=1
n+9=4n
3n=9
n=3 (ans)