# How do you write 13^-1 using only positive exponents?

${13}^{- 1} = \frac{1}{13}$
Apply the negative exponent rule: ${a}^{- m} = \frac{1}{{a}^{m}}$
${13}^{- 1} = \frac{1}{{13}^{1}} = \frac{1}{13}$