I wrote a (very long) blog post about those viral math problems and am looking for feedback, especially from people who are not convinced that the problem is ambiguous.
It's about a 30min read so thank you in advance if you really take the time to read it, but I think it's worth it if you joined such discussions in the past, but I'm probably biased because I wrote it :)
When I used to play WoW years ago I'd always put
-6 x 6 - 6 = -12in trade chat and they would all lose their minds. Adding that incorrect solution usually got them more riled up than having no solution.