First, 6 divided by 2 is called 6/2. Why?
It will make China people understand that "dividing by 2" means "dividing by 2", that is, "dividing by 2". Look at the example above, that is, "6 divided by 2", that is, "6 divided by 2".
It's actually very simple logic. As you can see, "6 divided by 2" is 6/2.
Exactly the same reasoning, "A minus B" is A-B.
I saw someone think so: A minus B equals B minus A equals B-A. ..
The problem with this kind of thinking is that B subtracts A, not B subtracts A(B-A), but "uses" B to subtract A (A-B). Because I don't usually say this, I'm confused when I think about it. Think about the difference between a divided by b and a divided by b.
As for why so many people think it's B-A, it doesn't matter. The important thing is that this language game is meaningless. Essence is the most important thing in mathematics. All conventions and references are based on convenience. The marks of many books in the professional field are not uniform, and there is no need to unify them, because readers only need to know what they mean. For example, if you write a book, the title page says: The book stipulates that "A minus B" is B-A, so it is B-A. As long as the reader understands what you mean, the essence is everything.
I don't know if I made it clear when I said this.
ps:
Wellgoodgreat's answer (B-A) is very logical and reasonable, but I have to refute it:)
Original text:
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I would like to make the following comments on this interesting issue:
1, someone said "A divided by B" by analogy and got "A/B(A divided by B)", and then came to the conclusion that "A divided by B" is "A minus B". It is worth noting that "a divided by b" can be said to be "b divided by a", but it cannot be said to be "a divided by b", so it is replaced.
2. According to some people's theory, A subtracts B to get A-B. Let's take a look: A-B must have B in A first, and then take B from A (that is, subtract it). It can be said that B is A minus B (that is, A minus B), so how does it conform to "A minus B"?
3. "A is a B+ verb" emphasizes the state of A, but this emphasis is subjective. Mathematics is an objective subject, and it is important to be simple and clear. So it is difficult to explain mathematics from the perspective of China people!
-I'm the dividing line-
1, your reasoning is:
(1)A minus B = A minus B.
(2)A divided by B = B/A
(3) So A minus B = B-A.
The problem is that a MINUS b is indeed a MINUS b, but it is not similar to a MINUS b, but similar to a MINUS b, that is, A/B, similar to a-B.
2. Your reasoning is:
B = B taken from a is subtracted from a.
The question is obvious. How was the first equation established? Why did A take it from A? Why wasn't B taken from A by B? Isn't that B-B? Why didn't B be taken away from A by C (God)? (C-B？ (Who took it? The answer is that the subject of "take away" does not exist, not the subject of "yes".
3. I totally agree! :)