Free Republic
Browse · Search
General/Chat
Topics · Post Article

Skip to comments.

48÷2(9+3) = ?

Posted on 04/12/2011 1:32:09 PM PDT by grundle

Texas Instruments TI-85 says:

48÷2(9+3) = 2

But Texas Instruments TI-86 says:

48÷2(9+3) = 288



TOPICS: Miscellaneous
KEYWORDS: algebra; math; mdas; pemdas; texasinstruments
Navigation: use the links below to view more comments.
first previous 1-2021-4041-6061-80 ... 661-670 next last
To: grundle

288


21 posted on 04/12/2011 1:39:23 PM PDT by petercooper (Purge the RINO's.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: Be Free
LOL...I guess I learned it a little different than you...

Parentheses, Powers (i.e. exponents), Multiplication, Division, Addition, Subtraction

22 posted on 04/12/2011 1:39:29 PM PDT by Joe 6-pack (Que me amat, amet et canem meum)
[ Post Reply | Private Reply | To 14 | View Replies]

To: buccaneer81

2


23 posted on 04/12/2011 1:39:39 PM PDT by shoedog
[ Post Reply | Private Reply | To 17 | View Replies]

To: grundle

I thought it was 288


24 posted on 04/12/2011 1:40:04 PM PDT by NeoCaveman (Silver, just buy the dips and thank me later.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: grundle

Ambiguous. The precedence of division and the multiplication of the parenthsized (9+3) is the same, therefore both answers are valid.

The preferred but non-binding left-to-right reading gives 288.


25 posted on 04/12/2011 1:40:20 PM PDT by MortMan (What disease did cured ham used to have?)
[ Post Reply | Private Reply | To 1 | View Replies]

To: grundle

2

48/2(9+3)=x
48/2*12=x
48/24=x
2=x

damn that math teacher that said “SHOW ALL YOUR WORK”


26 posted on 04/12/2011 1:42:34 PM PDT by gwilhelm56 (islam ... church of the Perpetually Offended!)
[ Post Reply | Private Reply | To 1 | View Replies]

To: Arm_Bears
Japanese crap.

I assume you drive a UAW-mobile?

27 posted on 04/12/2011 1:42:39 PM PDT by buccaneer81 (ECOMCON)
[ Post Reply | Private Reply | To 16 | View Replies]

To: grundle
What did you do Ray? What did you do??!!??


28 posted on 04/12/2011 1:43:16 PM PDT by Brett66 (Where government advances, and it advances relentlessly , freedom is imperiled -Janice Rogers Brown)
[ Post Reply | Private Reply | To 1 | View Replies]

To: gwilhelm56

If the equation was

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


29 posted on 04/12/2011 1:44:08 PM PDT by gwilhelm56 (islam ... church of the Perpetually Offended!)
[ Post Reply | Private Reply | To 26 | View Replies]

To: BoringGuy

You added a perenthesis around the 2*(9+3) element that disambiguates the equation. Using typical left-to-right processing, the answer is 288.


30 posted on 04/12/2011 1:44:40 PM PDT by MortMan (What disease did cured ham used to have?)
[ Post Reply | Private Reply | To 19 | View Replies]

To: shoedog

I like the explanation in post 25.


31 posted on 04/12/2011 1:45:08 PM PDT by buccaneer81 (ECOMCON)
[ Post Reply | Private Reply | To 23 | View Replies]

To: MortMan

“Ambiguous. The precedence of division and the multiplication of the parenthsized (9+3) is the same, therefore both answers are valid.”

Nosir. Joe 6 has it correctly, but I doubt public education teaches students to think before using a calculator these days.


32 posted on 04/12/2011 1:45:18 PM PDT by treetopsandroofs (Had FDR been GOP, there would have been no World Wars, just "The Great War" and "Roosevelt's Wars".)
[ Post Reply | Private Reply | To 25 | View Replies]

To: grundle

8675309


33 posted on 04/12/2011 1:46:11 PM PDT by Lazamataz (The Democrat Party is Communist. The Republican Party is Socialist. The Tea Party is Capitalist.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: gwilhelm56

What caused you to multiply before dividing? Multiplication and division (technically) have the same precedence, to my memory.


34 posted on 04/12/2011 1:46:22 PM PDT by MortMan (What disease did cured ham used to have?)
[ Post Reply | Private Reply | To 26 | View Replies]

To: gwilhelm56
the lack of a stated arithmetic operator between the 2 and the (9+3) associates them. That is the way you can build in an implied * to the equation

answer is 2

35 posted on 04/12/2011 1:46:36 PM PDT by BoringGuy
[ Post Reply | Private Reply | To 29 | View Replies]

To: grundle

36 posted on 04/12/2011 1:46:57 PM PDT by Lazamataz (The Democrat Party is Communist. The Republican Party is Socialist. The Tea Party is Capitalist.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: NRPM

I don’t know what is correct by the rules but in computer science it is parenthesis first followed by multiply or divide followed by add or subtract with whichever has precedence calculating left to right. In other words.

(48/2) * (9+3) = 288


37 posted on 04/12/2011 1:47:02 PM PDT by bkepley
[ Post Reply | Private Reply | To 20 | View Replies]

To: Responsibility2nd
That only works if there are parentheses around the 48/2. There aren't. In computing, the logics are as follows - anything in parentheses first, then multiplication, then division.

So logically, it would be:

1) 9+3 = 12
2) 2*12 = 24
3)48/24 = 2

38 posted on 04/12/2011 1:47:09 PM PDT by IYAS9YAS (Rose, there's a Messerschmit in the kitchen. Clean it up, will ya?)
[ Post Reply | Private Reply | To 6 | View Replies]

To: buccaneer81

I prefer the explanation in post 351.


39 posted on 04/12/2011 1:47:46 PM PDT by Lazamataz (The Democrat Party is Communist. The Republican Party is Socialist. The Tea Party is Capitalist.)
[ Post Reply | Private Reply | To 31 | View Replies]

To: stefanbatory
in order for it to be 288, it would need to read: 48/(2(9+3))

in order for it to be 288 2, it would need to read: 48/(2(9+3)) You got it backward.

40 posted on 04/12/2011 1:48:51 PM PDT by RobertClark (On a long enough timeline the survival rate for everyone drops to zero.)
[ Post Reply | Private Reply | To 7 | View Replies]


Navigation: use the links below to view more comments.
first previous 1-2021-4041-6061-80 ... 661-670 next last

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
General/Chat
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson