Solve the equation LaTeX:  \displaystyle \log_{5}(x + 3123)-\log_{5}(x + 23)=3 .

Using the quotient property of logarithms gives LaTeX:  \displaystyle \log_{5}\frac{x + 3123}{x + 23} = 3 . Making both sides of the equation exponents on the base LaTeX:  \displaystyle 5 gives LaTeX:  \displaystyle \frac{x + 3123}{x + 23}=125 . Clearing the fractions by multiplying by the LCD gives LaTeX:  \displaystyle x + 3123=125 x + 2875 . Isolating LaTeX:  \displaystyle x gives LaTeX:  \displaystyle x = 2 .