Question

Simplify the expression using the properties of exponents:
(7^2x^3y)^-1
_____________
(y^2)^-1

Answer 1

first flip everything to make the exponents positive
\[\frac{y^2}{7^2x^3y}\]

Answer 2

then i guess you can cancel a y from top and bottom to get
\[\frac{y}{49x^3}\]