Since you only have one `set-sol` this doesn't need to be a `set` answer type. You'd use `set` when there are multiple correct answers any one of which you want the user to enter.

Since you're now magically combining all the right answers into a single regex, you should be able to replace the whole `solution` `<div>` with the contents of the `<div class="entry"..` below. Just replace the dummy `a` with the appropriate `<var>NUMERSOL.regex()</var>` or `...DENOMSOL...`