Solve the equation LaTeX:  \displaystyle \log_{8}(x + 32787)-\log_{8}(x + 4115)=1 .

Using the quotient property of logarithms gives LaTeX:  \displaystyle \log_{8}\frac{x + 32787}{x + 4115} = 1 . Making both sides of the equation exponents on the base LaTeX:  \displaystyle 8 gives LaTeX:  \displaystyle \frac{x + 32787}{x + 4115}=8 . Clearing the fractions by multiplying by the LCD gives LaTeX:  \displaystyle x + 32787=8 x + 32920 . Isolating LaTeX:  \displaystyle x gives LaTeX:  \displaystyle x = -19 .