9/z^5w^2-8/zw^7 simplify

Answer 1

assuming the usual sloppiness with parentheses, I'll go with

9/(z^5w^2) - 8/(zw^7)

the LCD is z^5w^7, so we have

(9w^5 - 8z^4)/(z^5w^7)

not sure that's any simpler