Question 180893
You CANNOT solve this (since there is no equals sign). So I'm assuming that you just want to simplify. 




{{{7ab^(-4)}}} Start with the given expression.



{{{7a(1/b^4)}}} Rewrite {{{b^(-4)}}} as {{{1/b^4}}}



{{{7a/b^4}}} Multiply



So {{{7ab^(-4)}}} simplifies to {{{7a/b^4}}}