6÷2(1+2)=

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Originally Posted by qwertysaur

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Originally Posted by Bunny

To be fair, the way it is written on Facebook it uses the divided by sign that is, to my knowledge, impossible to make on the keyboard.

http://upload.wikimedia.org/wikipedi...on_Sign(a).png instead of 6/2(1+2).

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÷ Is Alt and 246 on the numberpad for windows. :p=

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Foiled again.

I find it laughable that you felt a need to use a calculator on this. :p People are making this far more complicated than it is. For some reason people see math and think it must all be Multivariable Calulus or something.

Around the 6/2 there is an invisible set of parentheses. It comes with the fact that it is a fraction.

Look at the problem written using the ÷ symbol, rewriting it as 6÷2(1+2). Now lets not follow proper PEMDAS to solve it. (You would first add the 1+2, then divide the 6÷2, then multiply the resulting 3*3) If you feel incomplete without them you can still write it as (6÷2)(1+2)

We can distribute the 2. But when we use the distributive property we must also distribute the sign. Usually this is where people make a mistake because they forget to do this because situation where you need to do this are very rare and usually avoidable. So 6÷2(1+2) becomes 6÷1 + 6÷2. From here we get to 6 + 3 (To Divide before Adding is an undisputed rule :p) which is 9.

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Originally Posted by qwertysaur

I find it laughable that you felt a need to use a calculator on this. :p People are making this far more complicated than it is. For some reason people see math and think it must all be Multivariable Calulus or something.

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If you're talking to me, my friend pulled his out for "proof" and then I went to make sure he didn't smurf with the input to get his desired answer.

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Originally Posted by qwertysaur

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Originally Posted by Justy

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Originally Posted by Goldenboko

No math class that actually matters would ask that question. Any division that can be misunderstood should be done as a fraction. Period.

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Ya basically. The division sign is too ambiguous. And if 6/2 is the coefficient why isn't it (6/2)? [I really don't know, I'm bad at math and I'm asking. :p]

But I have a ?.

Wouldn't 2(1+2) be the same as (2+4)? All I did was put the 2 into the parentheses. Unless of course 6/2 really is the coefficient. So then it could be solved when re written ((6/2)+(12/2)) :p Screw your PEDMAS

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PEMDAS works because you must go from right to left. The Distributive Property is just a form of Multiplication, and you always go from left to right. In this example 6/2 is the coefficient. But before applying the distributive property it's best to see if you can combine like terms first, as well as simplify. You are just using a more roundabout way to simplify. :p It's like going at 2+2 by saying that it's really 2 + bi - (-2 + bi) where b is any real number. Making the problem more complicated than it really needs to be.

You could say it's really 6(0.5 + 1) Note: I distributed the 1/2 and wrote all fractions as decimals. :p

What it all boils down to is division is really a form of multiplication, just like all subtraction is a form of addition. Also the fact that Arithmetic is very very easy. :p

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Where all this is true, application of PEMDAS is a menial task that when doing things like triple integrals, I don't have time to give a smurf about. Which is why I liek me them fractions.

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Originally Posted by Goldenboko

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Originally Posted by qwertysaur

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Originally Posted by Justy

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Originally Posted by Goldenboko

No math class that actually matters would ask that question. Any division that can be misunderstood should be done as a fraction. Period.

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Ya basically. The division sign is too ambiguous. And if 6/2 is the coefficient why isn't it (6/2)? [I really don't know, I'm bad at math and I'm asking. :p]

But I have a ?.

Wouldn't 2(1+2) be the same as (2+4)? All I did was put the 2 into the parentheses. Unless of course 6/2 really is the coefficient. So then it could be solved when re written ((6/2)+(12/2)) :p Screw your PEDMAS

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PEMDAS works because you must go from right to left. The Distributive Property is just a form of Multiplication, and you always go from left to right. In this example 6/2 is the coefficient. But before applying the distributive property it's best to see if you can combine like terms first, as well as simplify. You are just using a more roundabout way to simplify. :p It's like going at 2+2 by saying that it's really 2 + bi - (-2 + bi) where b is any real number. Making the problem more complicated than it really needs to be.

You could say it's really 6(0.5 + 1) Note: I distributed the 1/2 and wrote all fractions as decimals. :p

What it all boils down to is division is really a form of multiplication, just like all subtraction is a form of addition. Also the fact that Arithmetic is very very easy. :p

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Where all this is true, application of PEMDAS is a menial task that when doing things like triple integrals, I don't have time to give a smurf about. Which is why I liek me them fractions.

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You say that like Triple Integrals are difficult. :p

Also I don't think about PEMDAS either. I don't think about breathing or how to walk either. :p

Unfortunately I slept through Algebra One.

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Originally Posted by qwertysaur

9

PEMDAS is always done left to right. Q.E.D.

To be one is would have to be written as 6/(2(1+2)) :p

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I saw this math problem come up a few days ago and it left me a little unsettled as I cannot recall being taught that order of operations has different levels that need to be done on a left to right basis. Instead, I recall the order of operations being an absolute order that needed to be adhered to at all times.

I learned about the left to right logic and figured that it was an easy math problem that was written in a slightly ambiguous way to make people more conscious of this issue, probably.

The one she saw on Facebook was 6÷2(1+2). No potential fraction, less confusing. No real excuse for people to be answering 1.

My cousin got in an argument with some girl about this yesterday. I said he was right and she implied I was either a liar or stupid (I said I was a math teacher and she said "I can claim math teacher" and "I've had a lot of stupid teachers"), and then called us rude when she figured out she really was wrong. And then she deleted all of her comments before I had a chance to screencap them for Failbook. Damn.

Anyway, it's 9.

To anyone that's unclear, multiplication/division and addition/subtraction are inverse operations, and therefore the order of them is interchangable. PEDMSA is just as valid as PEMDAS.

So you do what's in the parenthesis, which simplifies the problem to 6÷2(3). The 2(3) is multiplication. It's expressed with a parenthesis, but it is still just multiplication.

That said, you do the remainder of the problem left-to-right: six, divided by two, and then times three.

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Originally Posted by Goldenboko

Unfortunately I slept through Algebra One.

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This is fifth grade math. Maybe fourth.

[q]xD yes Pikachu but I do it like the first example. but you do parenthesis first
6 / 2(3) = 3(3) = 9
6/2(3) = 6/6 = 1[/q]

So I am right. the answer is 9

9.

The answer is 7. Duh

1. nuff said

My australian school taught me BOMDAS and I just like saying it. BOMDAS. :bou::bou::bou::bou: yeah bitches.

I tried to work it out and ended up with 6÷2(1+2)= foa. WHAT DOES IT MEAN

Sorry guys I gotta say 1. It's the way my calculator thinks and it's the way I think. If it were 6:2 * (2+1) on the otherhand I'd say 9.

Because if the question was

6:2a
where a = 2 + 1

I would take that as 6/(2a) rather than (6/2)a

Now that i think about it

I DONT KNOW

Maybe its confusing to me because 2(2+1) looks like a function called 2 with input parameter 2 + 1

In fact screw it nothing says this is a math question and not a computer science question, for all i know it's terribly written pseudocode where someone decided to use 2 as a function name

So there is no answer unless someone gives me the subroutine for 2(float x) and if the subroutine for 2 was

return (x*2);

then my answer would be 1.