48÷2(9+3) = ????

Your Answer?


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dude the point was the parentheses in proper notation is SILL there. everyone getting 288 is assuming 2(12) turns into 2*12 in this equation it does not due to the fact that their is another equation 48/2(12).

I have said it before and i will say it again, in no situation would ever write an equation like this. in a real life scenario there would be another parentheses or it would be written 48/2*(9+3).it is poorly written on purpose. this would be a great finale extra credit question

You're right, this would be a great finale extra credit question. Who would provide the final answer? :lol:
 
order of operations and simplifying tutorial:
http://www.purplemath.com/modules/orderops.htm

go through it and LEARN :yes:

Example: Simplify 16 – 3(8 – 3)^2 ÷ 5
Example: Simplify 16 ÷ 2[8 – 3(4 – 2)] + 1 **for this one, they even show you how to use your graphing calculator** :lol:

Followup.

You fucked yourself with this link.

Check it, from the SAME LINK you posted

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.

15 ÷ 3 x 4 is the same as 15 ÷ 3(4)

For it to be what you claim it is it'd have to be 15 ÷ [3(4)]

That SAME site says:

There is no particular significance in the use of square brackets (the "[" and "]" above) instead of parentheses. Brackets and curly-braces (the "{" and "}" characters) are used when there are nested parentheses, as an aid to keeping track of which parentheses go with which.

Since there is no nested parentheses in the OP's equation you have to solve it the way it is - left to right.

Which is

the division of 48÷2 followed by the multiplication of that solution by 12.

This is not really that difficult. People are making the mistake of ADDING things to the equation making it a completely different equation, or are confusing PEMDAS to state that Multiplication takes precedence over division.

I truly hope there is a more reputable mathematician to answer this question to put this to rest.
 
You basically turn whatever's in the parentheses into ONE number. Then it ceases to be a priority.

thats the error, the parentheses is still there so it is still a priority

Im not so sure now...lol

i noticed on the youtube vid with the calculator that got 2 as the answer used the "÷" sign
MAN IM GOING TO SLEEP

already stated earlier that some calcs get it some dont: another explanation from http://www.purplemath.com/modules/exponent5.htm

A technology point: Calculators and other software do not compute things the way people do; they use pre-programmed algorithms. Sometimes the particular method the calculator uses can create difficulties in the context of fractional exponents.


For instance, you know that the cube root of –8 is –2, and the square of –2 is 4, so (–8)(2/3) = 4. But some calculators return a complex value or an error message, as is the case with one of my graphing calculators:


(-8)^(2/3) returns the complex value (-2, 3.46410161514)


If you enter "=(–8)^(2/3)" into a cell, the Microsoft "Excel" spreadsheet returns the error "#NUM!".



Some calculators and programs will do the computations as expected, as displayed at right from my other graphing calculator:


(-8)^(2/3) returns the expected value of 4


The difference has to do with the pre-programmed calculating algorithms. These algorithms generally try to do the computations in ways which require the fewest "operations", in order to process what you've entered as quickly as possible. But sometimes the fastest method isn't always the most useful, and your calculator will "choke".


For the umpteenth time

PEMDAS is

Parenthesis
Exponents
Multiplication AND division
Addition and Subtraction.

So when you're faced with a problem with parentheses, multiplication and division you complete the math WITHIN the parentheses FIRST. Then when that is complete and all that is left is division and multiplication you work LEFT TO RIGHT. Math and division are of equal precedence, and when faced with that you complete the problem in the normal manner - left to right. If the multiplication is on the right and division is on the left, you do it left to right. If the multiplication is on the left and the division is on the right you do it left to right.

this shit is NOT rocket science.

again as written 48/2(9+3) will become 48/2(12) it will NOT become 48/2 * 12. the 2 is attached to the () it will stay in front of the () until it is distributed out. according to Pemdas () take priority as such you distribute the 2 THEN continue with the rest of the equation.
 
I really cant believe on the that this shit is 30 pages and 2 im still up arguing with you cats over something i've stated and restated 20+ times. look review my posts.

the () dont disappear until the 2 is distributed in the equation as it is written. so the 2(12) is a higher priority than the 48/. nothing more to say from now on i'll play the shadows! good night and a big F U to the OP for recycling this shit, glad we are tlaking about something productive like math instead of something on Worldstar or some other bullshit in the world
 
again as written 48/2(9+3) will become 48/2(12) it will NOT become 48/2 * 12. the 2 is attached to the () it will stay in front of the () until it is distributed out. according to Pemdas () take priority as such you distribute the 2 THEN continue with the rest of the equation.
quoted. in the hope that it will sink in soon....man if I was a betting woman I would have taken the odds on this one!!!! :lol:
 
You know what.

Doing research further I found this:

Note that different software will process this differently; even different models of Texas Instruments graphing calculators will process this differently. In cases of ambiguity, be very careful of your parentheses, and make your meaning clear. The general consensus among math people is that "multiplication by juxtaposition" (that is, multiplying by just putting things next to each other, rather than using the "×" sign) indicates that the juxtaposed values must be multiplied together before processing other operations. But not all software is programmed this way, and sometimes teachers view things differently. If in doubt, ask!

(And please do not send me an e-mail either asking for or else proffering a definitive verdict on this issue. As far as I know, there is no such final verdict. And telling me to do this your way will not solve the issue!)

In the end, NEITHER PARTY IS WRONG.

There are MULTIPLE manners in solving this, so both 2 and 288 are correct, based on how you INTERPRET the equation.

I interpret it one way and get 288. Others interpret it another way and get 2.

So the beauty of it is - NOT EVEN MATH IS CONCRETE. There are holes in even what is considered the most universal language!!!!

It truly is amazing.

So with that said, i want to extend apologies to anyone I may have offended with my comments, starting with the most recent, Followup, all the way to Selfscience who felt like he ocked himself earlier in the thread.

Sakem can eat a dick for his superiority act, but to everyone else - let us recognize that this is definitely what one can consider a glitch in the matrix, and should this topic continue, let us discuss it respectfully - because the reality is there is no true correct answer.

And the bottom line - make sure you are CLEAR in how you want the problem to be solved! the extra parentheses, the * between the 2(9) makes a world of difference!

Here is the link for all who want to see.

http://www.purplemath.com/modules/orderops2.htm


Goodnight to all! And thanks for the stimulating discussion!
 
let me answer for him: no. followed by some more retarded nonsense :smh:

Last I checked, the idea is to solve what is WITHIN the parenthesis, not "get rid of" the parenthesis. When you get twelve, you have solved what's in the parenthesis. I've never seen any explanation that says "get rid of" or "eliminate" the parenthesis. Are you saying I'm not done with the parenthesis when I try to solve this: (24)(12). I am done. This is the same as 24x12 and this 24(12). Therefore this: 48/2(9+3) is the same as this: (48/2)(24x12).

If someone presents you with this: (5)(5)=? You're not going to go into a diatribe about how it is written wrong. You're going to say or write 25 without hesitation. This as is also 25: 5(5).
 
48÷2(9+3) = ????

i just multiplied the 2 with the 9 and then the 2 with the 3, then added those numbers up (18+6), finally dividing it with the 48.

it's really questionable the way this is worded because brackets are needed before the "2" to truly do it the way i did but i went ahead and did it anyway. lol.
 
Last I checked, the idea is to solve what is WITHIN the parenthesis, not "get rid of" the parenthesis. When you get twelve, you have solved what's in the parenthesis. I've never seen any explanation that says "get rid of" or "eliminate" the parenthesis. Are you saying I'm not done with the parenthesis when I try to solve this: (24)(12). I am done. This is the same as 24x12 and this 24(12). Therefore this: 48/2(9+3) is the same as this: (48/2)(24x12).

If someone presents you with this: (5)(5)=? You're not going to go into a diatribe about how it is written wrong. You're going to say or write 25 without hesitation. This as is also 25: 5(5).
in algebra you can not solve an equation if you leave parentheses in there...and you solved the equation in red incorrectly. Those equations are not the same. as I stated before, there is no higher order in (5)(5)=5*5. you need 2 or more signs to worry about ordering equations.
 
no need for an apology. I'm not offended, this is BGOL. But I am 100% correct and would put money on it. Not all can say the same.

I would bet money too. The only question is what is considered the right source for the answer (for the problem AS written)?
 
^^^^:rolleyes:

:smh:
Dota I wouldn't even bet you. You made the statement that 2(9) is not the same as (2(9)) or something crazy like that.
 
this is way math dosn't apply in the real world, in the real world you would ask to put this into context

example 1

there are two room, they both have equal amounts of people but inverted number of the opposite sex in each room, you have 48 cupcakes to share equally between everyone, if there is 9 women in one room and 3 women in the other how many cupcakes would each person get

there for 9+3=12*2 rooms =24 people /48 cupcakes=2 cupcakes each
 
this is way math dosn't apply in the real world, in the real world you would ask to put this into context

example 1

there are two room, they both have equal amounts of people but inverted number of the opposite sex in each room, you have 48 cupcakes to share equally between everyone, if there is 9 women in one room and 3 women in the other how many cupcakes would each person get

there for 9+3=12*2 rooms =24 people /48 cupcakes=2 cupcakes each
what does inverted amount of people mean?
for me math applies every day. at work, or at the store or whatever. I can calculate just about anything I come across in daily life with my brain only. I used to tell the kids that it was useful when I used to teach, but they didn't care. I bet some are on BGOL marking off 288 too...
 
in algebra you can not solve an equation if you leave parentheses in there...and you solved the equation in red incorrectly. Those equations are not the same. as I stated before, there is no higher order in (5)(5)=5*5. you need 2 or more signs to worry about ordering equations.

Could you please validate this?

So if I solve a problem like this in which my teacher is also grading my work, and not just the answer:

x=24(9+3)
x=24(12)
x=288

I'm going to get this answer wrong or partial credit because I left this step out:

x=24(9+3)
x=24(12)
x=24x12
x=288

Once again..maybe there is no right answer, but I submit to you that if you know for a fact that THIS equals 2 which it does:

48/[2(9+3)]

Then how can this also be 2?:

48/2(9+3)
 

right at the 5 minute mark, he goes into addressing this specific type problem.

i have my daughter using this program. it has helped immensely.




and for the record, if you copy and paste the OP's original equation, this is how google reads it.

516309

Great video, but he shows (c+d) x e-f....very different from e(c+d)-f
 
I can't believe this thread has gone 12+ pages.

Let's get a quick check: how many of the posters have completed Cal I (Differentials)?
Calc II, Volumes...since you asked...that was the hardest and I got my lowest grade in math in it. I want to retake it when I have the stamina again LOL
 
Im actually impressed by the number of people trying to solve a math problem on a porn board...But I'm rolling with 288 :lol:
 
Great video, but he shows (c+d) x e-f....very different from e(c+d)-f

Right, the true and only problem is

how is A(B) interpeted.

Is it given priority because it's directly next to the paranthese

or is it, just the same as A*B?

The rule says only what is inside only, unless someone can prove different.

That a number written directly next to parentheses makes it a higher priority grouping or it's regular order of operation.

That's specifically the problem. The way it's rewritten is short hand for A*B or is it rewritten that way based on a law of giving precedence to it because of the parenthesis.

I don't know one.
 
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Entered the equation in Excel to study the method (got 2 initially), the output was 288. Learn something new every day!
 
Im shocked out how many people can misinterpret order of operations. Just wow.

288 all day.

Granted there is some math that doesnt follow prescribed rules.....like 2+2=5 for very high values of 2.
 
I'm not even going to begin to scour this thread, but has anyone brought up the fact that this problem is written in scientific notation?

JD, I explained that shit from the get. We have implied notation that we can't code into computers. Computers, faced with this situation, must be coded to respond one way or the other. There's no way to code a calculator or a search engine to interpret your intent or school of thought. Because honestly, that's what it boils down to. The common convention, these days, is to use PEMDAS and let it ride.
 
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I know right!! :lol: My apologies to followup, Nate, and whoever else I was riding on last night. It's all fun with me. Not that serious. It's just the Internet. lol

I remember when my teacher said there was no such thing as subtraction. Mutha fuckas was like:eek::eek: Its like he set off a fire cracker in the class room.
 
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