48÷2(9+3) = ????
- Thread starter nubian
- Start date
It doesnt matter if you remove the parentheses
you cant multiply before you divide
unless its written like this
48/(2(12))=2
After you perform the operation inside the parentheses, you focus on EMDAS.
It has meant multiplication since long before I was born.
yeah i know...
Correct me if im wrong but everyone thats typign that the answer is 2 or 288 are inputing symbols that werent there at first. From what Im seeing most or just assuming based off whateva they learned? or think they learned?...lol
Did you read the post under that? 24÷3*4÷2 = 16
The symbols are there. You just need to know the rules of equations.
I've already damned the OP and this thread both to hell... but at the risk of having my diploma rescinded, i have just one question:
What is the point of computing what's inside the parentheses FIRST, if we don't then eliminate them altogether by computing the product of the number outside the parentheses and the sum of its contents?
What is the point of computing what's inside the parentheses FIRST, if we don't then eliminate them altogether by computing the product of the number outside the parentheses and the sum of its contents?
That happened to me real quick. I answered it based on my own understanding of math, having not really done much math for years. I got 288. Then I questioned myself.This is how fucked up the internet is right now. I initially thought the answer was 288 voted & everything. Then I scroll down to see the comments and based on how strongly both sides feel I don't know what to think anymore & I doubt my answer after all of it.
This is why the Government is shutting down.
I did my own research to back up my own findings, and to reassure myself. Now I KNOW I'm right. It's math, it's pretty much solid.
This is coming from someone who was a math idiot in HS, but blossomed into a math genius in college.
The problem with math is that people need to strip away anything that would confuse them taught in public school, and relearn shit. Don't question what you read in math books as wrong, try to understand it first.
No, I didn't
So why did you get 16?
Why didn't you do it like this
24÷12÷2?
Why didn't you do the multiplication first?
Can you explain that to me?
That equation I gave to you is the same as 24÷3(4÷2) Which isn't different from the OP except that instead of adding in the parentheses we're dividing in it.
If you can't understand this, I don't know what else to say.
I've already damned the OP and this thread both to hell... but at the risk of having my diploma rescinded, i have just one question:
What is the point of computing what's inside the parentheses FIRST, if we don't then eliminate them altogether by computing the product of the number outside the parentheses and the sum of its contents?
You do eliminate the parentheses, but not by doing anything OUTSIDE of the parentheses.
48/2(9+3) becomes 48/2*12
The human brain is so visual that teachers make a mistake anytime they write the rule as PEMDAS.
They should always write it as:
P: Parenthesis first
E: Exponents next
MD: Multiplication or Division next
AS: Addition or Subtraction last
...while verbally saying PEMDAS. Using a little more space on a page or board will resolve a lot of confusion.
So this is what I've gotten:
PEMDAS fucks up by suggesting hierarchy between inverse functions.
Multiplication is simply the inverse of division
Additition is the inverse of subtractuion
They are equal in hierarchy in respect to one another yet the four rank lower
than Parenthetical and Exponential functions.
This DOES make much more sense to me.
PEMDAS fucks up by suggesting hierarchy between inverse functions.
Multiplication is simply the inverse of division
Additition is the inverse of subtractuion
They are equal in hierarchy in respect to one another yet the four rank lower
than Parenthetical and Exponential functions.
This DOES make much more sense to me.
8 pages!! The answer is 2.
You have to work the () first which will give you 12. Then multiply by 2 which gives you 24. 48/24 = 2
Think of it this way. 48/(9+3) = 4.
If you are getting 288 that means you divided 48/2 then multiply by 12 which is not right.
Here is another way to look at it: 48/1 * 1/2 * 1/12
Treat them as fractions.
Here it is theoretical: w=48, x=2, y=9, z=3
w/x(y+z) = w/(xy+xz) = w *(xy+xz)^-1 = w * x^-1 * (y+z)^-1 = 48 * 2^-1 * (9+3)^-1 = 48 * (1/2) * (1/12) = 2
if you are coming up with 288 then you are treating the -1 exponent as a positive; meaning when you inverted the denominator to the numerator you made -1 a positive. This is not right. Example. 1/x = 1*x^-1 which is not equal to 1*x
The answer lies within arithmetic not programming
Master of Applied Math ('09)
You know you done fucked up, right?
As it's written, to make each part of the equation a fraction (which is how I checked my answer) once the parentheses were taken care of, it would be (48/1)*(1/2)*(12/1). Which equals 288 no matter what order you did them in.
Now look at what you wrote. How the hell did you turn 12 into (1/12)? With that error, you will get 2 for an answer. But instead of just chillin' in the wrong, you then went down a rabbit hole with some supercalifragilistic Enron math to justify this fuckin' turd you just coughed up. Lehman Brothers has a job waiting for you, buddy.
I will see your Masters' in Applied Math and raise you an Associates from Lincoln Tech.
I just went left to right. I'm not a math head and never said I was. I see what you mean but I never used this * before. All my math was on paper.
I've already damned the OP and this thread both to hell... but at the risk of having my diploma rescinded, i have just one question:
What is the point of computing what's inside the parentheses FIRST, if we don't then eliminate them altogether by computing the product of the number outside the parentheses and the sum of its contents?
You do whats inside the parentheses FIRST
Then if can become (12)
That indicates multiplication if it has a number in front of it 2(12)
YOU divide first since 48÷ comes before 2(12) and since multiplication and division have no rank
Another example
5-3+2=4
is the same as
5+(-3)+2
Parentheses pertaining to PEMDAS dont matter until there is operation to perform inside of it.
48/2 is the same as (48/1) * (1/2) and 2(12) is the same as 2 ÷ (1÷(12))
This is why they dont hold rank and you must go left to right
Why did you throw out PEMDAS? Wouldn't it still apply?
I'm not trying to fuck with you, I'm just trying to clarify it.
You did it right there, why would you change it for something else? Why is the parentheses remaining so difficult for people to grasp?
It just did it left to right without the (). So i just went straight across. It's because they way some of these teachers teach. It's like if it's not there then you have to change it up. It always annoyed me how teachers have different methods of doing shit.
Dude, he was just correcting your order. He wasn't saying you do multiplication first
Good looks... Fuckin college weed comin back to haunt a nigga.
Yep. I don't know who one would contact but a revision would be in order.
I mean, if I write 48÷2 x (9+3)
OP doesn't make this thread.
You know you done fucked up, right?
As it's written, to make each part of the equation a fraction (which is how I checked my answer) once the parentheses were taken care of, it would be (48/1)*(1/2)*(12/1). Which equals 288 no matter what order you did them in.
Now look at what you wrote. How the hell did you turn 12 into (1/12)? With that error, you will get 2 for an answer. But instead of just chillin' in the wrong, you then went down a rabbit hole with some supercalifragilistic Enron math to justify this fuckin' turd you just coughed up. Lehman Brothers has a job waiting for you, buddy.
I will see your Masters' in Applied Math and raise you an Associates from Lincoln Tech.
Dude I have already admitted my wrongness not too long after I made that post.
Plus you can't do Calculus of Variations better then me anyway
If you're teaching this level of math to adults... you'd be better off just passing out apps to Popeye's. Fill one out yourself while you're at it.
Oh, I see now. I went based off someone quoting him.
Yeah, I did mistype the acronym, but it can still be either way.
I apologize Devilstrider.
No harm done. This BGOL.
so are you saying that whenever your left with something like this
24(12) youre supposed to always multiply or divide?
Always multiply.so are you saying that whenever your left with something like this
24(12) youre supposed to always multiply or divide?
never knew this.
fuck it!...im done with math in school anyways...on to the bulls thread.
M and D hold no rank so you work it out from left to right
same as A and S
I proved why above this post
8/4*2=4 which means 8 * (1/4) * 2 = 4
8-4+2=6 which means 8 + (-4) + 2 = 6
Thats why you perform it left to right because it doesnt matter
The only reason M is in front D is because D is just the inverse
A is in front of S because its the inverse
same as A and S
I proved why above this post
8/4*2=4 which means 8 * (1/4) * 2 = 4
8-4+2=6 which means 8 + (-4) + 2 = 6
Thats why you perform it left to right because it doesnt matter
The only reason M is in front D is because D is just the inverse
A is in front of S because its the inverse
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