48÷2(9+3) cliffs?

[worker1]

http://www.purplemath.com/modules/orderops.htm

"A common technique for remembering the order of operations is the abbreviation "PEMDAS", which is turned into the phrase "Please Excuse My Dear Aunt Sally". It stands for "Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction". This tells you the ranks of the operations: Parentheses outrank exponents, which outrank multiplication and division (but multiplication and division are at the same rank), and these two outrank addition and subtraction (which are together on the bottom rank). When you have a bunch of operations of the same rank, you just operate from left to right. For instance, 15 ÷ 3 × 4 is not 15 ÷ 12, but is rather 5 × 4, because, going from left to right, you get to the division first. If you're not sure of this, test it in your calculator, which has been programmed with the Order of Operations hierarchy. For instance, typesetting this into a graphing calculator, you will get:"

It's not open to interpretation.

[doylertheoiler]

I'm gonna mind**** my class & teacher with this equation tomorrow lol

don't embarrass yourself, its 288

[racindude52]

The laws of mathematics that have not changed in eons agree on 288

"Multiplication and division are actually on the same level of importance in order of operations. So when remembering the letters PEMDAS, keep in mind that you should do multiplication and division in the order they appear in the problem. So if division is first and then multiplication, you must do the division first. "
http://www.algebralab.org/lessons/le...Operations.xml

[Blakeee]

^^well you should reconsider your degree, because you are multiplying the right term by the denominator of the first term... which goes against everything you ever learned about fractions.

nah bro, if it was written as 2*(9+3) then I'd be inclined to say 288, but since it's 2(9+3) I take it as the denominator to 42.

if it was written properly on paper, everyone would have the right answer, but the confusion on shorthand is what's causing all the fuss

[MinusP]

some of ya people retarded..

PEMDAS

parenthesis, exponential, multiplication AND Division, Adding AND Substracting


thats the order of highearchy on what goes first in math..


when in one equation there are 2 of more of the same level i.e. multiplication and division are both in the same level of importance, then you go from left to right.

these are the laws of math.. there are novariables there, it is clear.

given this the parenthesis is done first, then the division because its the one to the left followed by the multiplication..

its 288...

[DisregardLegs]

http://www.purplemath.com/modules/orderops.htm

"A common technique for remembering the order of operations is the abbreviation "PEMDAS", which is turned into the phrase "Please Excuse My Dear Aunt Sally". It stands for "Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction". This tells you the ranks of the operations: Parentheses outrank exponents, which outrank multiplication and division (but multiplication and division are at the same rank), and these two outrank addition and subtraction (which are together on the bottom rank). When you have a bunch of operations of the same rank, you just operate from left to right. For instance, 15 ÷ 3 × 4 is not 15 ÷ 12, but is rather 5 × 4, because, going from left to right, you get to the division first. If you're not sure of this, test it in your calculator, which has been programmed with the Order of Operations hierarchy. For instance, typesetting this into a graphing calculator, you will get:"

It's not open to interpretation.

Never learned that rule or I may have forgotten since highschool math. Thats the answer then. That settles it. You converted a 2'er to a 288er gjdm.

[OMGaGURL]

No write it on a piece of paper with literally 48 OVER 2*12.

You think you'd do 48 /2 but not the 12? Where's the 12 go then? You finish out the bottom then take the top over the bottom


PEMDAS. Multiply comes before divide anyway.


WRITE IT DOWN



48
___
2(9+3)



48
___
2*12


now why the FUK would you do 48/2 first? guys this thread is over.

The division symbol only implies the first operand to the right is divisible by the operand to the left. The equation 48 ÷ 2 (9 + 3) is 48 ÷ 2 * (9 + 3). Thus 42 is only divisible by 2 and not everything else in the equation on the right.

http://www.purplemath.com/modules/orderops.htm

"A common technique for remembering the order of operations is the abbreviation "PEMDAS", which is turned into the phrase "Please Excuse My Dear Aunt Sally". It stands for "Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction". This tells you the ranks of the operations: Parentheses outrank exponents, which outrank multiplication and division (but multiplication and division are at the same rank), and these two outrank addition and subtraction (which are together on the bottom rank). When you have a bunch of operations of the same rank, you just operate from left to right. For instance, 15 ÷ 3 × 4 is not 15 ÷ 12, but is rather 5 × 4, because, going from left to right, you get to the division first. If you're not sure of this, test it in your calculator, which has been programmed with the Order of Operations hierarchy. For instance, typesetting this into a graphing calculator, you will get:"

It's not open to interpretation.

This only says that things INSIDE the parentheses take precedence over other operations. Just because something is next to a set of parentheses doesn't suddenly bump it up in the order of operations. You're applying the rule incorrectly in an attempt to multiply 2 by the results of the parentheses before working the order of operations from left to right.

[hokie008]

interestingly enough, all of the engineering thread contributors (myself included) agree it is 288. I wonder who is right...

it is 288 ... I don't know why misc continue to make themselves look stupid by not knowing the order of operations ... learned in 9th or 10th grade ... it would be 2 if 48 / (2(9+3)) but you go left to right on multiplication / division ... once the 9+3 is done you go to 48 / 2 ... not 2 * 12 ... google it ... it is there.

[doylertheoiler]

nah bro, if it was written as 2*(9+3) then I'd be inclined to say 288, but since it's 2(9+3) I take it as the denominator to 42.

if it was written properly on paper, everyone would have the right answer, but the confusion on shorthand is what's causing all the fuss

I still don't agree. A dot, a multiplication sign, or no sign at all... all mean multiply. it makes no difference. Ask any of your profs next class, they will concur.

[mrblaz]

wooowww its 288 get over it. everyone who is saying its 2 is pretending it is 48/(2(9+3)) which it ISNT.

48/2(9+3)
48/2(12) --> THIS IS NOW 48 divided by 2 MULTIPLIED BY 12 = 48/2*12
ORDER OF OPERATIONS -> left to right regarding multiplication and division
24*12 = 288

jesus christ


btw wtf is pemdas lol. in canada is bedmas. wierd hahaha

[anonymous]

LOL

TCAT trolled the misc hard.

I'm now aware and lol'ing my ass off.

[doylertheoiler]

ib4 the skill testing question for mcdonalds monopoly 1000000 dollar winner is

48/2(9+3)

[Blakeee]

I still don't agree. A dot, a multiplication sign, or no sign at all... all mean multiply. it makes no difference. Ask any of your profs next class, they will concur.

my Casio agrees with me:



when I write it as 48÷2x(9+3) then it gets 288 lol

[Future24]

Asked my high school math teacher:

"If the problem is written with a division sign (can't make one, looks like subtraction with two dots), the answer is 288. If it's a fraction with 2(9+3) in the denominator, it's 2. If it is written exactly as you typed it, it's kinda vague, but the answer should be 288.

Even though PEMDAS says to do multiply before divide, because they are the "same" operation, you do them left to right unless there are parenthesis (or numberator/denominator). Hope that helped"

[OutdoorX]

The two is attached to the parenthesis by basic rule of X(Y+Z) is the same as (XY+XZ)

48/2(9+3)= DOES EQUAL 2

PROOF: Lets take out the 3 inside the parenthesis and replace it with Y, so (y=3) if you solve it backwards.


48/2(9+y)=2 .... ready to check work backwards by providing a solution of 2

48/(18+2y)=2 .... factor in the 2 that is attached to the parentheses

36 + 4y = 48 .... cross multiply

4y = 12 .... subtract 36 from both sides

y = 3 .... solve for y



Jordan fades back and swish.... that's the ballgame!

[yaco78]

LOL

TCAT trolled the misc hard.

I'm now aware and lol'ing my ass off.

he didnt just troll the misc. he trolled the entire internetz

this day should go down in wikipedia or something

[hokie008]

nah bro, if it was written as 2*(9+3) then I'd be inclined to say 288, but since it's 2(9+3) I take it as the denominator to 42.

2*(9+3) = 2(9+3) ... there is not a variable like 2*(9x+3) in algebra ... so what you wrote is the exact same thing ... parentheses are the same thing as * in math ... to an extent but parentheses also represent order as well as multiplication. In your case it is a order so 9+3 = 12 ... 12 * 2 = 24 ...

[Buff Matt]

he didnt just troll the misc. he trolled the entire internetz

this day should go down in wikipedia or something

it was actually asked on other forums first then made its way here

[cz121292]

The two is attached to the parenthesis by basic rule of X(Y+Z) is the same as (XY+XZ)

48/2(9+3)= DOES EQUAL 2

PROOF: Lets take out the 3 inside the parenthesis and replace it with Y, so (y=3) if you solve it backwards.


48/2(9+y)=2 .... ready to check work backwards by providing a solution of 2

48/(18+2y)=2 .... factor in the 2 that is attached to the parentheses

36 + 4y = 48 .... cross multiply

4y = 12 .... subtract 36 from both sides

y = 3 .... solve for y



Jordan fades back and swish.... that's the ballgame!

You distributed wrong. You cant just take the two out and distribute that unless you are thinking it is 48/[2(9+y)]

[John L]

in canada is bedmas

bedmas?

da fuk?

[yaco78]

it was actually asked on other forums first then made its way here

damn, where did it start?

[OutdoorX]

You distributed wrong. You cant just take the two out and distribute that unless you are thinking it is 48/[2(9+y)]

You can't just divide the 48 by 2 first unless you are thinking (48/2)(9+y).

[RalGrad]

btw wtf is pemdas lol. in canada is bedmas. wierd hahaha

this^ lol. i had to google to figure out why they were calling it that.

i'm saying 288.
the main argument i'm seeing for 2 (aside from people not understanding order of operations) is that they think 2(12) is stronger then 2x12.
has anyone posted why this would be? otherwise the topics pretty much closed.

[Brahesthetics]

bedmas?

da fuk?

brackets exponents division multiplication subtraction


canadians arent redneck enough to have a dear aunt sally motha****a

source: i moved from canada to america during high school math and was immediately aware of the larger number of idiots

answers 288 btw

[IllPhill]

PEMDAS you f*cking *******s

[Mbalz-Iz-Hari]

The two is attached to the parenthesis by basic rule of X(Y+Z) is the same as (XY+XZ)

48/2(9+3)= DOES EQUAL 2

PROOF: Lets take out the 3 inside the parenthesis and replace it with Y, so (y=3) if you solve it backwards.


48/2(9+y)=2 .... ready to check work backwards by providing a solution of 2

48/(18+2y)=2 .... factor in the 2 that is attached to the parentheses

36 + 4y = 48 .... cross multiply

4y = 12 .... subtract 36 from both sides

y = 3 .... solve for y



Jordan fades back and swish.... that's the ballgame!

You're a fcuking moron.

48/2(9+3) != 48/(2(9+3))

48/(2(9+3)) is the original implication of the question.

The answer is 288.

Engineers unite!

[Blakeee]

2*(9+3) = 2(9+3) ... there is not a variable like 2*(9x+3) in algebra ... so what you wrote is the exact same thing ... parentheses are the same thing as * in math ... to an extent but parentheses also represent order as well as multiplication. In your case it is a order so 9+3 = 12 ... 12 * 2 = 24 ...

yeah I know they essentially do the same thing, but yes I agree with you on the fact that parentheses with come first order wise

[ZachNCSU92]

2 Brah reporting in. For it to be 288, wouldn't it have to be (48/2)(9+3)? The way it is written does not make it very clear what the (9+3) is being multiplied by.

[yaco78]

You can't just divide the 48 by 2 first unless you are thinking (48/2)(9+y).

actually, you HAVE to divide 48 by 2 first

unless you want to distribute like you did in your example, but the only way to distribute correctly is:
48/2(9+3)
48/2*9 + 48/2*3
= 216 + 72
=288

[worker1]

48÷2(9+3)
48÷2(12)
48÷24
288