Solve the equation LaTeX:  \displaystyle \log_{9}(x + 6541)-\log_{9}(x + 61)=2 .

Using the quotient property of logarithms gives LaTeX:  \displaystyle \log_{9}\frac{x + 6541}{x + 61} = 2 . Making both sides of the equation exponents on the base LaTeX:  \displaystyle 9 gives LaTeX:  \displaystyle \frac{x + 6541}{x + 61}=81 . Clearing the fractions by multiplying by the LCD gives LaTeX:  \displaystyle x + 6541=81 x + 4941 . Isolating LaTeX:  \displaystyle x gives LaTeX:  \displaystyle x = 20 .