Simplify (7x^-1)/(y^-1)

$\frac{7 x^{- 1}}{y^{- 1}}$

Move $x^{- 1}$ to the denominator using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$\frac{7}{y^{- 1} x}$

Move $y^{- 1}$ to the numerator using the negative exponent rule $\frac{1}{b^{- n}} = b^{n}$ .

$\frac{7 y}{x}$