This one's got the internet stumped. The main problem here is: when do you stick the value in the brackets into the equation: Before, or after the division is made?
The answers either 2 or 288. Both sides have merit. Enjoy your flame wa- i mean debate :P.
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Views: 1467 Posts: 44
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Re: 48÷2(9+3) = ???
By ivorylegend - 28-07-2015 18:53
The correct answer, is that the equation is written with ambiguous notation and that in the form it is currently written as is not valid.
It should either be written with the 48 above a line, with 2(9+3) below the line, or written as 48 above the line, 2 below the line, then the (9+3) in a bracket next to it.
There is no answer because there is no valid question.
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Ant: 48÷2(9+3) = ???
By kevinskyy - 01-08-2015 19:17
This thing has been going on for ages lol
It's written just fine, no problem there.
First do everything in brackets, then do ":" & "x", then the rest, from left to right.
So, the answer is ... :-)
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Re: 48÷2(9+3) = ???
By ivorylegend - 02-08-2015 21:42
kevinskyy wrote:This thing has been going on for ages lol
It's written just fine, no problem there.
There is a problem there, I suggest you re-read my post :-p
It is written as a pre-schooler would write it, the reason that the divisor sign is not used in algebra is because it allows for ambiguity. It is not possible to write the same equation using the divisor line, which shows you it is not valid.
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Re: 48÷2(9+3) = ???
By ivorylegend - 03-08-2015 11:39
kevinskyy wrote:I reread it, still see no problem :-)
Maybe you never advanced past pre-school maths then?
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Re: 48÷2(9+3) = ???
By chv1 - 04-08-2015 10:13
ivorylegend wrote:There is a problem there, I suggest you re-read my post :-p
It is written as a pre-schooler would write it, the reason that the divisor sign is not used in algebra is because it allows for ambiguity. It is not possible to write the same equation using the divisor line, which shows you it is not valid.
Well I think it is:
48/2 x (9+3)
;)
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Re: 48÷2(9+3) = ???
By tosspot - 06-08-2015 07:48
BODMAS is misleading - D and M are equal (as are A and S), they are done as they appear left to right.
48÷2(9+3)
Brackets -> 48÷2x12
Orders -> 48÷2x12
Division or Multiplication (in left to right order) -> 288
Addition or Subtraction (in left to right order) -> 288
288
And ivory, there is no problem with how it's written.
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Re: 48÷2(9+3) = ???
By grinner - 16-08-2015 02:44
Tuesday, but i think i forgot to carry the pickles.
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Ant: 48÷2(9+3) = ???
By kevinskyy - 16-08-2015 08:10
Ivory, if I say I have a master in bio-ingenetics, does that answer your question?
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Re: 48÷2(9+3) = ???
By ivorylegend - 21-08-2015 11:42
kevinskyy wrote:Ivory, if I say I have a master in bio-ingenetics, does that answer your question?
If you are resorting to a who has the biggest balls already it means you have very little evidence to support your position.
The bottom line, is that you could never reverse engineer an equation into this format because you would never be left with the obelus nor an equation without full parenthesis.
The equation written in this form is sloppy, the onus is on the writer of the equation to provide clarity that devoids the equation of ambiguity.
You don't use the obelus in Algebra because it encourages ambiguity, its as simple as that.
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Re: 48÷2(9+3) = ???
By mihairo - 21-08-2015 12:18
48÷2(9+3) = 48÷2x(9+3) = 24x12 = 288 - the correct answer.
48÷[2(9+3)] = 48÷(2x12) = 48÷24 = 2
@fernandes_ - good job!
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Ce: 48÷2(9+3) = ???
By emrelion08 - 02-09-2015 01:47
www.managerzone.com/?p=forum&sub=topic&topic_id=11691252&forum_id=88&sport=soccer
2 or 288 ? :)
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Re: 48÷2(9+3) = ???
By webunited - 28-12-2015 03:15
just google for 48÷2(9+3) and you'll have a surprise!
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Re: 48÷2(9+3) = ???
By dainsanefh - 17-05-2016 05:35
I think some people need to learn PMDAS (or whatever variation you were taught) all over again. I'll not wear pants until we consistently choose the correct answer.
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Re: 48÷2(9+3) = ???
By pepeporreta - 31-07-2016 06:32
what does calculator say?
288.
I'll get stick to that.
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Re: 48÷2(9+3) = ???
By aemi - 31-07-2016 06:38
288, but don't quote me on this.
Did anybody ask Trump?
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Re: 48÷2(9+3) = ???
By luapardo - 31-08-2016 16:26
BODMAS Rule
48÷2(9+3)
= 24 x (9+3)
= 24 x 12
= 288
Solved_
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Re: 48÷2(9+3) = ???
By coconut_wolf_bandit - 18-10-2016 02:42
luapardo wrote:BODMAS Rule
48÷2(9+3)
= 24 x (9+3)
= 24 x 12
= 288
Solved_
Omg. Drives me nuts.
Brackets (Parentheses) Over Division, Multiplication, Addition & Subtraction. *
This means that the normal order of operations (division and multiplication occur before addition and subtraction) remains the same in all equations UNLESS brackets are present, in which case the equation within the brackets (or multiple brackets) needs to occur/be solved first.
In this instance (where / = divison)
48 / 2 (9+3)
= 48 / 2 (12)
= 48 / 2 x 12
= 48 / 24
= 2
288 is the answer if extra brackets are added:
(48 / 2)(9+3)
= (24)(12)
= 288
I'm sorry but anyone who says that the initial equation equals 288 is an idiot.
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Re: 48÷2(9+3) = ???
By coconut_wolf_bandit - 18-10-2016 02:44
webunited wrote:just google for 48÷2(9+3) and you'll have a surprise!
Google's answer, if you actually look at the equation they put into the calculator (above the answer) shows you they they put brackets (parentheses) around "48 / 2" which completely changes the equation.
If you put "48÷(2(9+3))" into google then you get 2. And that is the correct answer (and also the correct equation).
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Re: 48÷2(9+3) = ???
By webunited - 21-10-2016 04:40
coconut_wolf_bandit wrote:Google's answer, if you actually look at the equation they put into the calculator (above the answer) shows you they they put brackets (parentheses) around "48 / 2" which completely changes the equation.
If you put "48÷(2(9+3))" into google then you get 2. And that is the correct answer (and also the correct equation).
I didn't say Google was right!
I said that you would have a surprise!
my opinion is that the correct answer is 2
google changes it by adding a bracket that wasn't there
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Re: 48÷2(9+3) = ???
By mihairo - 21-10-2016 12:04
coconut_wolf_bandit wrote:Omg. Drives me nuts.
...
I'm sorry but anyone who says that the initial equation equals 288 is an idiot.
That's not nice. It's 288.
48÷2(9+3)= 24 x 12 = 288.
I'm not saying go and learn some Math, but some manners.
Good luck and enjoy!
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Re: 48÷2(9+3) = ???
By clrfatih61 - 21-10-2016 12:30
mihairo wrote:That's not nice. It's 288.
48÷2(9+3)= 24 x 12 = 288.
I'm not saying go and learn some Math, but some manners.
Good luck and enjoy!
Ofcourse
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Re: 48÷2(9+3) = ???
By coconut_wolf_bandit - 26-10-2016 23:55
mihairo wrote:That's not nice. It's 288.
48÷2(9+3)= 24 x 12 = 288.
I'm not saying go and learn some Math, but some manners.
Good luck and enjoy!
Haha good because your maths is wrong!
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Re: 48÷2(9+3) = ???
By deleted_1644956 - 04-11-2016 17:12
We have two possible answers: 288 or 2.
If 2 is the correct answer it will be this:
48/2*(9+3) = 2
If we divide both sides for (9+3) we should get the same numbers on both sides, right?
So, we get this:
(48/2*(9+3))/(9+3) = 2/(9+3)
After that, we get:
48/2 = 2/12
24 = 1/6
So, thats wrong.
Same stuff for 288:
(48/2*(9+3))/(9+3) = 288/(9+3)
Getting:
48/2 = 288/12
Then:
So, 48/2 = (288/6)/(12/6)
And VOILA!
48/2 = 48/2
So, 288 is the right answer.
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Re: 48÷2(9+3) = ???
By jogador26098 - 09-11-2016 13:17
For the result to be 2, the expression should be:
48÷[2(9+3)]
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Re: 48÷2(9+3) = ???
By coconut_wolf_bandit - 09-11-2016 13:40
I spoke to a patient of mine at work today who stated what I believe to be true:
- both answers are correct
a) the answer is 2 is correct because the lack of a multiplication sign is said to imply that the "2(9+3)" should be treated as one unit (instead of the equation saying
"2*(9+3)"
b) the answer 288 is correct as the lack of additional brackets complicates the issue.
I won't comment again, I believe that there is room for both answers to be correct and that the question has been designed specifically to cause arguments. The way maths is taught in Australia, anything added onto brackets, with no sign present in between, should be treated as a whole, aka:
~ Re-draw the equation 48/2(9+3) into algebra:
A/B(C+D)
= A/(BC+BD) (expanding brackets)
Let A = 48, B = 2, C = 9, D = 3 (the equation)
= 48/[(2*9)+(2*3)]
= 48/[18+6]
= 48/24
= 2
As you can see there, if you were to solve this equation algebraically, you cannot get 288.
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Re: 48÷2(9+3) = ???
By aemi - 09-11-2016 21:11
piti_chivu wrote:How much it's 2+2:2 ?
9. Is that all you got?
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Re: 48÷2(9+3) = ???
By maria171 - 10-11-2016 13:53
oh my god, it's almost the end of 2016 and this debate still going on?
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