If theres +50 pages about this on hundreds of websites wouldnt you think that confirms this as being ambiguous.
Theres no "law" people have to follow when working these types of problems, only conventions that they learn from a textbook or teacher. If the main sources of learning states two different things, how does one truly interpret a 48÷2(9+3) problem without their being an argument or conflict.
No, that just confirms that it is confusing. Not ambiguous.
There is still just one, and only one correct answer.
Its like tie breakers in sports playoff seeding. Confusing scenarios can arise, but not ambiguous ones....only one of those teams makes it.