Math: right answer

[tidus1203]

Hahahaha nakakatawa a simple equation has turned into a debate. Tapos pati mga scientific calculators and JAVA ek ek sinali na... Galing ng TS he created a discussion on something that looks innocent!

[c_cube]

*tidus

kahit ako natatawa na. simpleng simpleng thread lang, hindi ko akalain hahaba ng ganito hahaha!!!

basta 288 sagot ko dahil ito una kong nacompute na sagot pero ngayon binabasa ko ang mga explanation ng mga tao dito parang "2" nga ang sagot

[vito corleone]

double post

[c_cube]

double post --- lagi kasi nag page not found

[vito corleone]

Hahahaha nakakatawa a simple equation has turned into a debate. Tapos pati mga scientific calculators and JAVA ek ek sinali na... Galing ng TS he created a discussion on something that looks innocent!

yeah, that expression (it's not an equation, btw ) looked innocent at first hehhe

[nurse_corrupted]

The answer is 2.

[mike18]

We will use PEMDAS – Parenthesis, Exponent, Multiplication and Division, Addition and Subtraction. (multiplication and division are of the same level and so are interchangeable, the same rule applies to addition and subtraction)

Solve what’s inside the parenthesis first. After solving what’s inside the parenthesis and you are left with multiplication and division to solve, you do it from LEFT to RIGHT.

48÷2(9+3)=
48÷2(12)=
24(12)=288

If the answer is 2, this should be the correct equation:
48÷[2(9+3)]=
48÷[2(12)]=
48÷[24]=
48÷[24]=2

But that isn’t the equation to solve, it was 48÷2(9+3), that’s why my answer is 288.

[digitalron]

always follow mdas, pre, para di ka magkamali

Yes I do. The MDAS doesn't mean that Multiplication is ahead of Division. Both Multiplication AND Division have the same precedence, you just evaluate left to right, whichever comes first.

Same with Addition Subtraction: they both have the same precedence and should be evaluated left to right

Note that in Canada, it's called BEDMAS: it doesn't mean that division is always strictly ahead of multiplication.

http://en.wikipedia.org/wiki/Order_of_operations

[MXFX]

group first, then division (instead of multiplication since division is on the left), then multiplication.

288

[digitalron]

Sa National Bookstore ko nabili ang calculator, baka sa Miranda bookstore mo nabili yung 2 calc mo..

I used a Texas Instrument emulator and Wolfram Alpha. I also just did a test using Picalc and MathOpenRef







http://www.mathopenref.com/calculator.html

http://www.picalc.com/

http://www.wolframalpha.com/input/?i...B72%289%2B3%29

[jansky]

wow di ko alam hahaba pala itong thread hehe

anyway ito rin sagot ko dyan

= 2

why.

2(9+3) is one expression ,
going deeper this can be written as (2*9) + (2*3) and this became 18+6 = 24

48 / 24 = 2



my own opinion
48 / 2 *(9+3) is different from 48 / 2 (9+3)

48 / 2 *(9+3) can be read as 48 / 2 *1(9+3)

48 / 2 (9+3) can be read as 48 / (2*9+2*3)

sundan lang ang PEMDAS

[roninblade]

Ok, after looking at multiple sources online (nalito na din ako) regarding this awful notation, I'm gonna join the fray.

standard of operation precendence is PEMDAS
this stands for Parentheses, Exponents and roots, Multiplication and Division, Addition and Subtraction. then evaluate left to right if both signs are equal in precedence.

Multiplication doesn't take precendence over division, they are evaluated left to right.

PEMDAS is only arranged that way because it's the easiest to say, and therefore easy to learn and memorize; but it could also be PEDMAS, PEMDSA, or PEDMSA.

plus, try to google it directly for the online calculator feature.

Google's answer and my answer is 288.

[digitalron]

wow di ko alam hahaba pala itong thread hehe

anyway ito rin sagot ko dyan

= 2

why.

2(9+3) is one expression ,
going deeper this can be written as (2*9) + (2*3) and this became 18+6 = 24

48 / 24 = 2



my own opinion
48 / 2 *(9+3) is different from 48 / 2 (9+3)

48 / 2 *(9+3) can be read as 48 / 2 *1(9+3)

48 / 2 (9+3) can be read as 48 / (2*9+2*3)

sundan lang ang PEMDAS

Exactly sir, let's follow PEMDAS, which I'll reiterate is also known as BEDMAS elsewhere, to show that multiplication does NOT have precedence over division; instead, the two are equal and evaluated left to right.

The equation presented is of the form a/bc, which is a shortcut for a/b*c. The expression bc cannot be treated as a single term because it is a multiplication expression that involves two parameters, b and c. If b and c should be treated as a single term, then it should be rendered as (bc)

That is why there is a PEMDAS rule, to handle supposedly ambiguous expressions like the aforementioned. With PEDMAS, there is no longer any ambiguity to the given expression: perform the operations inside the parenthesis (or brackets), then, evaluate left to right.

I don't think Google, with thousands of engineers, many of whom have majors or minors in Mathematics, will make a Mistake on this.

Also, you can take a look at how Wolfram alpha evaluates the expression as per the link I gave on my previous post. Btw, Wolfram Alpha has been hailed by Popular Science In 2009

http://en.wikipedia.org/wiki/Wolfram_Alpha

[12vdc]

Hmm..


Why dont we just use and compare the calculators we have instead of online calc.. Lets see how consistent the answer.

[roninblade]

buhay pa din ang thread kahit 2.30am

sa kaka-search ko, nakita ko na 'tong topic sa body building forums, tennis forums, physics forums, etc.


rotfl

[kinyo]

i agree with my calculator

[chua_riwap]

ibigay nyo 'to dun sa youngest bs math summa cum laude ng UP....yung si John Pelias.

i'll go for 288.
interpretation ko kasi rito is ganito......

48/2(9+3)
= 24(12)
= 288

yun lang. bahala na kayo.....

[CVT]

Pagalingan na lang ng calculator iyan.... :hysterical:

12.8K:toma:

[digitalron]

Pagalingan na lang ng calculator iyan.... :hysterical:

12.8K:toma:

Even calculator makers are confused

[jansky]

hahaah.. yeah calculator also confused.

tried excel and it will give us 288 also



but get back to topic

if we going to substitute everything into variables (algebraic equation)
then assume


Let V=?, W=48, X=2, Y=9, Z=3

Solve for V

V= W÷X(Y+Z)

V= W÷(XY+XZ)

V= 48÷24

V= 2