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 :)
No it isn't.
The only brand of physical calculator which is inconsistent is Texas Instruments, and it's right there in the manual that they disobey The Distributive Law. E-calculators are another issue altogether (that's what happens when programmers don't check they have their Maths right first) dotnet.social/@SmartmanApps/111164851485070719