Depends what you mean by 'better' (in what sense?).
Nevertheless, though it is possible that an LLM can solve algebra, in general it shall not offer any benefit than a computer algebra system (again depends on what is 'better', and assuming a fair comparison).
This is because in doing so an LLM needs to deal with both the language and the math, while computer algebra system only needs to work on the math. It is like a top human runner and a vehicle - in general vehicle moves faster because this is what they are crafted solely for.
And a few words on the comments - finding rhymes is NOT like solving equations, because no rhymes is wrong (even if it sounds terrible, but that's subjective); but there is straight wrong in solving equations.
On the other hand, there are efforts to discover and improve algorithms, most notably Google's AlphaTensor. However it has nothing to do with LLM, but a lot to do with RL.