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6÷2(1+2)=? |
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Total Votes : 26 |
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Cal Hurst Atlantic Legend


Joined: 29 Dec 2003 Posts: 8025 Location: Massachusetts
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Posted: Thu May 05, 2011 2:10 am Post subject: 6÷2(1+2)=? |
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It raged on Facebook and reddit, and I'm bringing it here. What say you? _________________
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Tazar Journeyman


Joined: 13 Mar 2010 Posts: 171 Location: Falling Waters Fortress
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Posted: Thu May 05, 2011 8:24 am Post subject: |
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By math formulas, it generates an error...
Calculate brackets first (so 2 + 1 = 3) and the 6 / 2 = 3. This would leave us with 3(3). There is no sign between the two denoting further action... Typo? or is that really it? _________________
Tazar - Captain of the Royal Britannian Guard - Retired
Lord of "Falling Waters Fortress", the home of "The Order of the Drunken Elders" |
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Wynn Honored Member


Joined: 07 Feb 2009 Posts: 1107 Location: Falling Waters Fortress
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Posted: Thu May 05, 2011 8:52 am Post subject: |
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I am with taz what did you want us to do with the 2 3's there isnt a sign in the middle telling you what to do. Ohh I did need my algebra after all. =) thank you Mr. Zirk. _________________ What you do today is important because you are exchanging a day of your life for it.
-- Anonymous |
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Ryu Musashi Adventurer

Joined: 26 May 2009 Posts: 65
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Posted: Thu May 05, 2011 10:10 am Post subject: |
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Well it can go both ways from my opinion 3(3) would multiply into 9.. but you think about it can be 1 also 6/2(2+1) could be multplying into 6/6 which wold equal into 1.. It's up to you how you do the math.. Or another way to do it is if you keep the (2+1) above the divison bar that would make you end up with 9 OR! you can mulitply the 2 into the parethesis making it into 6/2+4 which makes into 3+4= 7 due so in the end its up to you how your are going to solve it.. |
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Yasamin Lore Master

Joined: 25 Jul 2007 Posts: 1221 Location: Behind the laughter that lays within the shadows
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Posted: Thu May 05, 2011 11:46 am Post subject: |
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I don't see why this is hard. Paranthesis first, then left to right (paranthesis = multiplication).
Why is this raging on facebook?  _________________ (4:45:41 PM) Jarem: It becomes increasingly difficult to feel noble in my causes when my cause is to defend my charge from her own violent tendencies. |
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Cal Hurst Atlantic Legend


Joined: 29 Dec 2003 Posts: 8025 Location: Massachusetts
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Posted: Thu May 05, 2011 12:18 pm Post subject: |
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Any number, let's say x, next to a number in parenthesis, let's say y, denotes multiplication. Therefor, x(y) = xy. 2(2) = 4, 10(6) = 60.
And there is only ONE real way to solve this. _________________
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Rosar Ashande Slightly Crazed

Joined: 08 Dec 2004 Posts: 1283 Location: in ur haus, ringen ur chymz
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Posted: Thu May 05, 2011 12:54 pm Post subject: |
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I think it's 1. Pretty sure multiplication comes before division (PEMDAS). Of course, I also suck at math, so I might be wrong.
1+2 = 3 (parentheses always come first—I know that much)
2 x 3 = 6 (like Cal said, this means multiplication)
6/6 = 1 _________________ a.k.a., Killian Ond, Oliver Dunham, Iorwerth (ap Gruffydd), Husam (ibn) Sadid, Ortinlem |
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Cal Hurst Atlantic Legend


Joined: 29 Dec 2003 Posts: 8025 Location: Massachusetts
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Posted: Thu May 05, 2011 1:02 pm Post subject: |
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Multiplication and Division have the same priority, as do Addition and Subtraction.
Therefor, when doing M/D and A/S, you go from left to right. _________________
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Rosar Ashande Slightly Crazed

Joined: 08 Dec 2004 Posts: 1283 Location: in ur haus, ringen ur chymz
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Posted: Thu May 05, 2011 1:20 pm Post subject: |
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So it's 9. That was what I thought it was initially, then I thought back and misremembered the order of operations.
I'll just chalk it up to me being a moron. _________________ a.k.a., Killian Ond, Oliver Dunham, Iorwerth (ap Gruffydd), Husam (ibn) Sadid, Ortinlem |
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Ryu Musashi Adventurer

Joined: 26 May 2009 Posts: 65
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Posted: Thu May 05, 2011 1:32 pm Post subject: |
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You would distribute first
6/2(2+1)
6/2(3)
which mulitplying the three with the two becuase you got to get rid of the parenthesis first then you can do multiplication or division..
so i would think it be 1 |
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Cal Hurst Atlantic Legend


Joined: 29 Dec 2003 Posts: 8025 Location: Massachusetts
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Posted: Thu May 05, 2011 1:56 pm Post subject: |
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Distributive property works when one of the numbers outside of the parenthesis isn't being called into an operation first. IE:
6 (2 + 4) = 6(6) = 36.
However, when the number before the parenthesis is being called by another operator first, doing the distributive property first will give you erroneous answers.
There is no mathematical law that says you must "get rid of" the parenthesis first. You must perform the actions INSIDE the parenthesis first. If you truly wish to rid the problem of any parenthesis, then you can substitute one operator for another. IE:
6/2(3) becomes 6/2 * 3. _________________
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Joanna Weaver Lore Keeper


Joined: 24 Aug 2005 Posts: 851 Location: ~Magincia~ Republic of Magincia Administrator @}'~,~'<[M]>'~,~'{@
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Posted: Thu May 05, 2011 2:48 pm Post subject: |
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Brackets ought to come first. 3. Then you have the 6 divided by 2 = 3. Usually anything next to brackets is multiplication, if my memory isn't too old.
So I am left with 3.
Cal states it way better. _________________ "Art and architecture must combine to create something larger than either." ~ Robert Campbell |
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Cal Hurst Atlantic Legend


Joined: 29 Dec 2003 Posts: 8025 Location: Massachusetts
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Posted: Thu May 05, 2011 2:50 pm Post subject: |
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You're left with 3(3)  _________________
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Yasamin Lore Master

Joined: 25 Jul 2007 Posts: 1221 Location: Behind the laughter that lays within the shadows
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Posted: Thu May 05, 2011 3:37 pm Post subject: |
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This is too funny now.
6/2(2+1)= 6/2(3)=6/2*3=3*3=9
I want a division button on my typewriter.  _________________ (4:45:41 PM) Jarem: It becomes increasingly difficult to feel noble in my causes when my cause is to defend my charge from her own violent tendencies. |
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Joanna Weaver Lore Keeper


Joined: 24 Aug 2005 Posts: 851 Location: ~Magincia~ Republic of Magincia Administrator @}'~,~'<[M]>'~,~'{@
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Posted: Thu May 05, 2011 3:58 pm Post subject: |
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Don't know why it says 3. I got 9... and voted 9. _________________ "Art and architecture must combine to create something larger than either." ~ Robert Campbell |
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