no, a different forum that has nothing to do with either math or physics

Ah! I think we get to the nub of the argument.

[Link: knowyourmeme.com]

I see this 48/2(9+3) as this...

The alternatives (which I believe to incorrect) see it as this...

If one is using a single line, and it's the latter that's intended, the denominator should be clearly defined...

Then, what do they call [ ] or { }?

What's wrong with it? Explain what, don't just say it's wrong. The operation in parentheses has to be performed first because anything under the / is the same as using a horizontal dividing line and you can't just grab part of the equation and work it out randomly.

If the 48/2 was supposed to be a separate operation, it would have been expressed as (48/2)(9+3)=x

[Link: en.wikipedia.org]

I thought I had.

As would (2(9+3)) or, more correctly, [2(9+3)] if it is to be considered the denominator. To quote from here...

Similarly, care must be exercised when using the slash ('/') symbol. The string of characters "1/2x" is interpreted by the above conventions as (1/2)x. The contrary interpretation should be written explicitly as 1/(2x). Again, the use of brackets will clarify the meaning and should be used if there is any chance of misinterpretation.

the operation in paranthesis is done first, thart is 9+3=12.

48/2(9+3) means 48/2(12) we did the parenthesis, now we move on
if 48/2(12) mixes you up because you see ( to represent multiplication, then replace it with *, in the end it is the same operation, both (and x) represent multiplication.
so if I asked 48/2*12 would you still say it is 2? you should do the operations (since they are all multiplication/division and so on the same level ) in the order they appear. So 48/2=12 since / pops up first and then 24*12=288

even though mathematically, that representation would be equally correct to the original, no mathematician would ever use it. The parenthesis in (48/2) is redundant and useless and Mathematicians are lazy by nature, that is why they would also not write it as 48/2*(9+3) why add an extra symbol when it implies multiplication without it.

Do you think we finally convinced him?

Well, I think you should know BODMAS

In BODMAS,we actually have

B
O
D M
A S

i.e. Divsion and Multiplication have the same order

So, we first open the bracket.

And then go from left to right.

The correct answer is 288

After almost 8 years of living real life since this post hit the web... i can safely say that i don't need to understand what you folks are talking about.

Well, it's the same formula Trump uses to calculate his tax returns knowing that the IRS won't know any better.

"It's the same thing that was discussed during the campaign trail, the president is under audit. It's a routine one that continues," he said in a video I saw on FB2Mate. How do you guys think about it??

everyday