Hi Jazzgirl!
Remember that in inequalities the > or < changes when you divide or multiply by a negative number:
3*2<4*2
multiplying by -1:
-6>-8
So, you have to consider cases and suppose that your denominator (either x-4 or x) is positive or negative and isolate x following the same rules than equations, but also considering the sign.
Let me know if this helps,
GARF