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# Math: 6÷2(1+2) = ?

Anonymous Coward
User ID: 30235756
01/14/2013 10:40 AM
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Re: Math: 6÷2(1+2) = ?
if you really must use PEMDAS its
(P) Do this first
(E)Do this next
(MD) Do these left to right
(AS) Do these left to right

so its 9
Quoting: Anonymous Coward 30235756

Why don't you try eliminating parentheses first, as order of operations says you should
Quoting: Anonymous Coward 32057798

I did

6÷2*3=

Now do left from right. If you really don't understand simple mathematics and have to depend on rules designed for little school kids who can't basic grasp concept please use BIDMAS instead of PEMDAS

BIDMAS (brackets, indices, division, then multiplication, addition, subtraction)

brackets 6/2(3)

division 3(3)

multiplication 9
Anonymous Coward
User ID: 26118369
United States
01/14/2013 10:51 AM
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Re: Math: 6÷2(1+2) = ?
Anonymous Coward
User ID: 26118369
United States
01/14/2013 10:51 AM
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Re: Math: 6÷2(1+2) = ?
Anonymous Coward
User ID: 32057798
01/14/2013 10:52 AM
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Re: Math: 6÷2(1+2) = ?
I did

6÷2*3=

Now do left from right. If you really don't understand simple mathematics and have to depend on rules designed for little school kids who can't basic grasp concept please use BIDMAS instead of PEMDAS

BIDMAS (brackets, indices, division, then multiplication, addition, subtraction)

brackets 6/2(3)

division 3(3)

multiplication 9
Quoting: Anonymous Coward 30235756

You sure did. Not writing them in your next step is not eliminating them.
Student to teacher: "The math property I used in solving this equation was to just not write stuff from the previous step"

Teacher: "Fail"
Anonymous Coward
User ID: 32057798
01/14/2013 10:56 AM
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Re: Math: 6÷2(1+2) = ?
Whatever is enclosed in parentheses must be simplified first, or if not, it must interact as a quantity with anything outside.
This means any operation on the quantity in parentheses must be applied to all of its parts. The most
common and important example is called the distributive property.
Quoting: hoyletutoring.com

It is not just what is inside parentheses (which is what kids first learn)...

As in the above:
6÷2(1+2) = 6 ÷ [2(2) + 2(1)] = 6 ÷ (4 + 2) = 1
Anonymous Coward
User ID: 30235756
01/14/2013 11:11 AM
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Re: Math: 6÷2(1+2) = ?
Whatever is enclosed in parentheses must be simplified first, or if not, it must interact as a quantity with anything outside.
This means any operation on the quantity in parentheses must be applied to all of its parts. The most
common and important example is called the distributive property.
Quoting: hoyletutoring.com

It is not just what is inside parentheses (which is what kids first learn)...

As in the above:
6÷2(1+2) = 6 ÷ [2(2) + 2(1)] = 6 ÷ (4 + 2) = 1
Quoting: Anonymous Coward 32057798

You point to a guy who has a BA in music to prove your point NICE [link to www.hoyletutoring.com]

Anyway in Canada they now teach the BIDMAS Systems not PEDMAS to elementary school kids as the PEDMAS is flawed as per the above example

Anonymous Coward
User ID: 32057798
01/14/2013 11:24 AM
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Re: Math: 6÷2(1+2) = ?
You point to a guy who has a BA in music to prove your point NICE [link to www.hoyletutoring.com]

Anyway in Canada they now teach the BIDMAS Systems not PEDMAS to elementary school kids as the PEDMAS is flawed as per the above example

Quoting: Anonymous Coward 30235756

You get 9 because you know elementary school maths.

I was never taught any mnemonic. I was taught order of operations, factoring, algebra, calculus, etc...

"We use the distributive property to help us find a way around the order of operations while still being sure that we keep the value of the expression."

Distribute BEFORE "pedmas" AND use with numbers, possible used to REMOVE parentheses too. [link to www.algebra.com]

Get Rid of parentheses with Distribution:

If there is some factor multiplying the parentheses, then the only way to get rid of the parentheses is to multiply using the distributive law.

These guys got it right, they use "Parentheses" in the order of operations to require Distributive Property.
Ref: Purplemath
Anonymous Coward
User ID: 20566260
United States
01/14/2013 11:48 AM
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Re: Math: 6÷2(1+2) = ?
6÷2(1+2) =

6/2(3) =

6/6 = 1

1

1

1

THATS IT IT IS 1
Quoting: DPS

You almost had it. After parenth you are supposed to move left to right.

You solved 2*3 first, but instead you should have done 6/2 first.

Then you would have been left with 3(3) which is 9.
Quoting: J&V

no!

you dont just leave (3) if youre left with (3) or any other number you are supposed to finish it! and then do left to right
Quoting: DPS

There is nothing left to do with (3)

You cant just make something up.
cantlive4ever

User ID: 29341887
United States
01/14/2013 11:55 AM
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Re: Math: 6÷2(1+2) = ?
The correct answer is 9. Multiplication and division take precedent over addition and subtraction. HOWEVER, multiplication and division are of equal precedence, as are addition and subtraction.

To show the work it would be:
Parenthesis first (1+2)=3
So now we have 6 divided by 2 times 3
Since division and multiplication are of equal precidence work left to right:
6 divided by 2=3
Now we are left with 3*3=9.

The confusion seems to be with how we are taught at a very young age. We are all taught things like PEMDAS, BEDMAS or BIDMAS and we forget that multiplication and division are equal as are subtraction and addition.
Remember, I made these predictions before I correlated them to the Mayan long count or studied the prophecies of the cleansing.
DUCM900

User ID: 32174052
Italy
01/14/2013 11:56 AM
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Re: Math: 6÷2(1+2) = ?
To me its 1

[]
Anonymous Coward
User ID: 30235756
01/14/2013 03:18 PM
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Re: Math: 6÷2(1+2) = ?
Irrespective of who is right or wrong just the fact the education system is so flawed we can't even agree on the answer to a simple elementary school (Primary school for UK / Aus folks) question tells me we have a serious problem in our society.

oh and the answer is 9
DUCM900

User ID: 32195573
Italy
01/14/2013 03:48 PM
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Re: Math: 6÷2(1+2) = ?
oh and the answer is 9
Quoting: Anonymous Coward 30235756

Anonymous Coward
User ID: 31519086
Australia
01/14/2013 05:16 PM
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Re: Math: 6÷2(1+2) = ?
no!

you dont just leave (3) if youre left with (3) or any other number you are supposed to finish it! and then do left to right
Quoting: DPS

There is nothing left to do with (3)
Quoting: J&V

Sure there is. (3) is equivalent to 3 is it not? So you can eliminate the parentheses, and change (3) to 3.
Anonymous Coward
User ID: 20566260
United States
01/14/2013 05:20 PM
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Re: Math: 6÷2(1+2) = ?
no!

you dont just leave (3) if youre left with (3) or any other number you are supposed to finish it! and then do left to right
Quoting: DPS

There is nothing left to do with (3)
Quoting: J&V

Sure there is. (3) is equivalent to 3 is it not? So you can eliminate the parentheses, and change (3) to 3.
Quoting: Anonymous Coward 31519086

Exactly!!!

So 3(3) = 9!
Anonymous Coward
User ID: 32057798
01/14/2013 06:01 PM
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Re: Math: 6÷2(1+2) = ?
Did no one read the references? The 9's start ignoring references, yet keep pleading 9, with nothing to back it up...
DUCM900

User ID: 32195573
Italy
01/14/2013 06:04 PM
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Re: Math: 6÷2(1+2) = ?
LOL excel say = 9

put this in a cell of the worksheet:

=6/2*(1+2)

Anonymous Coward
User ID: 30235756
01/14/2013 06:18 PM
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Re: Math: 6÷2(1+2) = ?
Did no one read the references? The 9's start ignoring references, yet keep pleading 9, with nothing to back it up...
Quoting: Anonymous Coward 32057798

Multiple people with PHD's in Mathematics say 9. I get your music teach said 1 but hey I pay my kids music teacher \$20 an hour and the folks with the PHD in math get \$200 an hour

Just saying

oh and the answer is 9
DUCM900

User ID: 32195573
Italy
01/14/2013 06:19 PM
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Re: Math: 6÷2(1+2) = ?
you get 1 if you set this:

=6/(2*(1+2))
Anonymous Coward
User ID: 32057798
01/14/2013 06:29 PM
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Re: Math: 6÷2(1+2) = ?
LOL excel say = 9

put this in a cell of the worksheet:

=6/2*(1+2)

Quoting: DUCM900

That isn't the question though. I bet excel won't even accept 6÷2(1+2)
Do you know why? Because no one taught excel how to use the distributive property.
Anonymous Coward
User ID: 32057798
01/14/2013 06:31 PM
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Re: Math: 6÷2(1+2) = ?
Multiple people with PHD's in Mathematics say 9. I get your music teach said 1 but hey I pay my kids music teacher \$20 an hour and the folks with the PHD in math get \$200 an hour

Just saying

oh and the answer is 9
Quoting: Anonymous Coward 30235756

Which people? Do they ALL say 9 ? No one with a PhD say it is 1? I have math book references that are written by 2 guys with PhDs in mathematics, and they say 1/2n = 1/(2n). In that case then, 6/2a where a = 2+1 = 1.
Anonymous Coward
User ID: 32057798
01/14/2013 06:32 PM
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Re: Math: 6÷2(1+2) = ?
you get 1 if you set this:

=6/(2*(1+2))
Quoting: DUCM900

You get 9 if and ONLY if you set this:

(6÷2)(1+2)
sTTsTTT

User ID: 4852102
United States
01/14/2013 06:58 PM
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Re: Math: 6÷2(1+2) = ?
Back in the Stone Age, when all we had to cypher were fingers, toes, twigs & pebbles (too young for rocks & sticks), the Cave Elder sketched it out thus:

||||||
===
| || . | ||

and

|||||| / | || . | ||

Never did teach us any of the magic words Pedmas, Bidmas, Ladymas... Although there was a fireside story about a Chief SoCaToA or some such...
Apocalypse: All shall be revealed. And all shall be revealed.
*******
All Human Beings are Human. Not all Humans are Human Beings.
*******
Anonymous Coward
User ID: 30235756
01/14/2013 07:04 PM
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Re: Math: 6÷2(1+2) = ?
you get 1 if you set this:

=6/(2*(1+2))
Quoting: DUCM900

You get 9 if and ONLY if you set this:

(6÷2)(1+2)
Quoting: Anonymous Coward 32057798

The brackets were removed when you solved the equation in parentheses

so it was 6÷2*3

but you have to now solve left to right

And PEMDAS IS WRONG

and algebra and distributive property are not relavent here because we are not doing algebra

OK so lets do it your way

6÷2(1+2)= ?

is not the same as

6
-----
(2+4)

You are confusing fractions with division

Anonymous Coward
User ID: 24090746
United States
01/14/2013 07:10 PM
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Re: Math: 6÷2(1+2) = ?
It is 9 you fucking retards!
Here_For_Donuts

User ID: 24797199
United States
01/14/2013 07:21 PM
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Re: Math: 6÷2(1+2) = ?
Alright, there's a lot of self-proclaimed experts around these parts. Let's see how your logic holds up against some basic mathematics.

6÷2(1+2) = ?

I'll give two hints. This is NOT a trick question, and there is only 1 correct answer.

All tools used for computation are fair game.

(Yes, I saw this somewhere else and decided to post it here.)

Best of luck to all you geniuses .
Quoting: Syrius

6÷2(1+2) = n

6÷2(3) = n

6÷6 = n

1 = n

Where is my cookie, damn it?
Am I a guy, or am I a lesbian with a penis?
Anonymous Coward
User ID: 21416459
United States
01/14/2013 07:23 PM
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Re: Math: 6÷2(1+2) = ?
11teen
Anonymous Coward
User ID: 32057798
01/14/2013 07:24 PM
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Re: Math: 6÷2(1+2) = ?
and algebra and distributive property are not relavent here because we are not doing algebra

Quoting: Anonymous Coward 30235756

That is so fucking wrong it is frustrating. Certain math rules apply to numbers, and some to variables, but not both !??! LOLOLOLOLOLOLOLOL!!! You have just been banished from this thread !!
Anonymous Coward
User ID: 31519086
Australia
01/14/2013 07:27 PM
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Re: Math: 6÷2(1+2) = ?
LOL excel say = 9

put this in a cell of the worksheet:

=6/2*(1+2)

Quoting: DUCM900

That isn't the question though. I bet excel won't even accept 6÷2(1+2)
Do you know why? Because no one taught excel how to use the distributive property.
Quoting: Anonymous Coward 32057798

Anonymous Coward
User ID: 31519086
Australia
01/14/2013 07:29 PM
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Re: Math: 6÷2(1+2) = ?
LOL excel say = 9

put this in a cell of the worksheet:

=6/2*(1+2)

Quoting: DUCM900

That isn't the question though. I bet excel won't even accept 6÷2(1+2)
Do you know why? Because no one taught excel how to use the distributive property.
Quoting: Anonymous Coward 32057798

Quoting: Anonymous Coward 31519086

the plus signs got mangled up somehow, so change in the orange box where it says "(1 2)" to "(1 + 2)".
Anonymous Coward
User ID: 32221112
01/14/2013 07:34 PM
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Re: Math: 6÷2(1+2) = ?
32057798 is a dumbfuck and will never even try to understand this so all I can say is

Find anyone with a PHD in Math and Science who says the answer is 1.