13 years ago*

Comment has been collapsed.

48/24 is 2... WTH.
You added two eights after pressing enter on the other calc?

13 years ago
Permalink

Comment has been collapsed.

I inputted the same formula on both calculators.

13 years ago
Permalink

Comment has been collapsed.

Actually, those guys lower are right.
Multiplication and Division are together on the priority ladder. So whichever goes first - it goes first.
288.

13 years ago
Permalink

Comment has been collapsed.

Eread is right everyone thinks its 48/2x12 but ITS NOT its 48/2x(12) and you always solve ( ) first so everyone who think its 288 you are wrong you cant just remove ( ) and do the multi and div without them.

13 years ago
Permalink

Comment has been collapsed.

You solve the stuff INSIDE the brackets, not anything next to them.

13 years ago
Permalink

Comment has been collapsed.

pikachu is right, the 2(12) is brackets which takes priority, you've got some settings wrong on one of your calculators

13 years ago
Permalink

Comment has been collapsed.

13 years ago
Permalink

Comment has been collapsed.

Wolfram is using a different order of operations to the calculator. Both are consistent with their own standards.

13 years ago
Permalink

Comment has been collapsed.

That's one crazy thumbnail.

13 years ago
Permalink

Comment has been collapsed.

I agree. It should be clipped.

13 years ago
Permalink

Comment has been collapsed.

Yerp.

13 years ago
Permalink

Comment has been collapsed.

This is correct. 48/2(9+3) = (48)/(2(9+3)), not (48/2)(9+3) in case that's what you were thinking.

13 years ago
Permalink

Comment has been collapsed.

Don't think so... You first solve parenthesis then you start multipling and dividing from left to the right... so it is 48/2*12 wich is 288

13 years ago
Permalink

Comment has been collapsed.

Yes. The calculator uses a different convention, where multiplication comes first, rather than the common one which you were taught in school.

edit: Just looked in the user's manual. Explicit multiplication and division are at priority 9, whereas implicit multiplication is considered priority 5.

OP, try 48/2*(9+3) and you should get 288 if the calculator follows its own rules.

13 years ago
Permalink

Comment has been collapsed.

2 is good your wrong, cos its 48/ (2x12) so its 48/24 and its 2

13 years ago
Permalink

Comment has been collapsed.

You do know that if there's division and multiplication, division will go first because it is first.

13 years ago
Permalink

Comment has been collapsed.

That depends on the convention that you choose, but usually multiplication takes precedence. In the absence of a convention the expression is ambiguous and requires more parenthesis.

13 years ago
Permalink

Comment has been collapsed.

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

13 years ago
Permalink

Comment has been collapsed.

I don't know what your saing (i don't know english words of math) but it's rule of priority, so first and always are brackets then are the rest. Maybe i wrote something wrong but I wanted to split that.
And some caculators don't split, and are doing the actions in sequence.

13 years ago
Permalink

Comment has been collapsed.

wrong. multiplication only ever takes precedence when it comes before division. otherwise division is first. no more parentheses are needed

13 years ago
Permalink

Comment has been collapsed.

does no one remember PEMDAS? Parentheses, Exponents, Multiply/Divide, Add/Subtract

13 years ago
Permalink

Comment has been collapsed.

Ignoring the fact that the problem itself is poorly written, which is the source of the confusion...

The rules are, parentheses first,then exponents, then multiplication, then addition (division and subtraction are just different forms of multiplication/addition).

So
-48/2(9+3)
-2. 48/212
-3. 24
12
-4. 288.

The calculator reporting 2 you should scrap.

13 years ago
Permalink

Comment has been collapsed.

Booth is possible:
(48 / 2) (9 + 3) -->
48 / 2 = 24
24
(9 + 3) = 288

48 / (2 (9 + 3)) -->
2
(9 + 3) = 24
48 / 24 = 2

By the way the formula is displayed it could be interpreted booth ways!

13 years ago
Permalink

Comment has been collapsed.

No.

13 years ago
Permalink

Comment has been collapsed.

Yeah... You think math is kind of philosophy? Where every person has his own way to solve problems?
Math has strict methods.
288 is correct.

13 years ago
Permalink

Comment has been collapsed.

^this

13 years ago
Permalink

Comment has been collapsed.

Herp. Order of operations was done correctly by the calculators. No point in this topic....

13 years ago
Permalink

Comment has been collapsed.

So 48/2=24 and 9+3=12 then 24*12=288
So the result is 288 ? Am I right ?

Anyway what is that pony (if is a pony) doing in the background on the computer ?

13 years ago
Permalink

Comment has been collapsed.

First thing to do is math in brackets, so it will end up being 48/2*12.
No more extra brackets and you can't add your own. It changes sh!t!
Now you have to do two operations of equal level. Hence you go from left to right.
You get 288.

Love the idea of my first post here being about maht. :-P

13 years ago
Permalink

Comment has been collapsed.

I was unaware there were so many uneducated people here.
PEMDAS + Left to right

48/2(9+3)

48/2*(9+3)

48/2*(12)

48/2*12

288

13 years ago
Permalink

Comment has been collapsed.

how did the ( ) suddenly disappear? you dont remove them you solve them first.

13 years ago
Permalink

Comment has been collapsed.

It doesn't change anything, simplification. Also a fan of how these forums don't let you type multiple separate lines.

13 years ago
Permalink

Comment has been collapsed.

removing brackets for no reason is not simplification, its changing into a completely different problem

13 years ago
Permalink

Comment has been collapsed.

2x÷2x = ?

13 years ago
Permalink

Comment has been collapsed.

would be x^2? :]

13 years ago
Permalink

Comment has been collapsed.

my calculator shows its 1

13 years ago
Permalink

Comment has been collapsed.

It's obviously 1.

13 years ago
Permalink

Comment has been collapsed.

What if x=0?

13 years ago
Permalink

Comment has been collapsed.

LOL by the way my calculator do both results 48/2(9+3)=2 and 48/2*(9+3)=288... and i've got casio fx-570es plus

13 years ago
Permalink

Comment has been collapsed.

Crazy japan calculator developers.

13 years ago
Permalink

Comment has been collapsed.

Insert () everywhere and it will be fine)
Just interested if there is "x" symbol missing? Maybe there is the problem?

13 years ago
Permalink

Comment has been collapsed.

No it wont be fine its something with before the (, as someone sait the right is 288, now i know that xD, rule from left to right, but why the is changing the result in a professional calculator...

13 years ago
Permalink

Comment has been collapsed.

PEMDAS:
Parenthesis
Exponent
Multiplication
Division
Addition
Subtraction

Y u guys no pay attention in class?? lol

13 years ago
Permalink

Comment has been collapsed.

Go to hell with you PEMDAS i don't want to live on this planet anymore. By the way now SOPA is deleting this topic or ACTA, cos its violate the intellectual property, and its piracy someone result.

13 years ago
Permalink

Comment has been collapsed.

My calc says it's 288

13 years ago
Permalink

Comment has been collapsed.

It's mathematically imposible.

13 years ago
Permalink

Comment has been collapsed.

my mom says the same =O

13 years ago
Permalink

Comment has been collapsed.

yes better ask mom
+1 for moms

13 years ago
Permalink

Comment has been collapsed.

I’m a math professor, and my view is that although the standard convention, if applied precisely and rigorously, does give an unambiguous procedure to follow, nobody, and that includes professional mathematicians, would ever write a formula like this. This is mostly because, after about 3rd grade, none of us ever use the division symbol ever again.

13 years ago
Permalink

Comment has been collapsed.

Dude, you haven't input them right. As you know there are sign for multipliyng, divinding and so on... On both calculators you haven't entered nothing except divinding.

On the first calculator it calculated this:

48 dividing by 2 multiplying by 12. Here is it :
(48/2 )(9+3)= 2412 = 288
on the other it's 48/[2(9+3)] = 48/[212]=48/24=2

Are you one of the 1+1*0=0 guys or you just are ripped off too much for the second calculator?

13 years ago
Permalink

Comment has been collapsed.

The calculator with "2" shows the result for 48/[2(9+3)]=48/(29)+(23)=48/(18+6)=48/24=2.
The calculator with "288" shows the result for (48/2)
(9+3)=(24)(9+3)=(249)+(24*3)=216+72=288.
This is why in math you use the fraction,to avoid confusion caused by the "/" sign.

13 years ago
Permalink

Comment has been collapsed.

288

Also I learned BEDMAS, not PEMDAS, but it works the same.

That said, please excuse my drunk aunt sally is way better, imo

13 years ago
Permalink

Comment has been collapsed.

Please Do Not Throw Sausage Pizza Away. Easier way to remember 7 layers of the OSI model :)

13 years ago
Permalink

Comment has been collapsed.

Wow thanks for that one, I may have to keep it in mind :)

13 years ago
Permalink

Comment has been collapsed.

its 288.

Order of Operations: Parenthesis, Exponents, Multiplication/Divison(left to right), Addition/Subtraction(left to right)

48/2(9+3)--> 48/2(12) (parenthesis first. no exponents, so we go straight to multiplication/division. whichever is first on the left side is calculated first)

48/2(12)--> 24(12)--> 288.

The answer would only be 2 if the equation was set up like this instead--> 48/[2(9+3)].

13 years ago
Permalink

Comment has been collapsed.

OP is trolling. -_-

He didn't press the equals symbol otherwise it would've shown at the end of the equation line.

13 years ago
Permalink

Comment has been collapsed.

nope

13 years ago
Permalink

Comment has been collapsed.

Peter Eats Moldy Doritos And Salsa, people!
It is 288. There's reasons I don't trust calculators for everything.

13 years ago
Permalink

Comment has been collapsed.

lol i dont get whats so hard here its simple math... just to you who forgot ill make it fast and simple:
( ) are top priority so solve it first you get 9+3=12 yeah than you have 48/2(12) kay and you SHOULD know ( ) comes before Multiplication and Division so first you do 2*(12) and not 48/2 cus you have to solve the ( ) yet you get it? easy whats so hard here problem solved.

13 years ago
Permalink

Comment has been collapsed.

you be trollin'

13 years ago
Permalink

Comment has been collapsed.

thats for sure

13 years ago
Permalink

Comment has been collapsed.

OMG whats so hard to understand ITS NOT 48:2x12 ITS 48:2x(12) and you solve the ( ) first pfft.

13 years ago
Permalink

Comment has been collapsed.

you know that putting a single constant like 12 in brackets is the same as not putting it in brackets? like 5 + 4 = 9, and (5) + 4 = 9, too, get it?... trust me, got A's in Maths since I started school, which was 10.5 years ago ;D...

13 years ago
Permalink

Comment has been collapsed.

Closed 13 years ago by simonli2575.