Write as a Single Logarithm log base b of 7- log base b of 7

$\log_{b} (7) - \log_{b} (7)$

Use the quotient property of logarithms, $\log_{b} (x) - \log_{b} (y) = \log_{b} (\frac{x}{y})$ .

$\log_{b} (\frac{7}{7})$