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6

6÷2(1+2) = ?

  • 9

    Votes: 94 54.3%

  • 1

    Votes: 77 44.5%

  • 7

    Votes: 2 1.2%
  • Total voters
    173
From a previous wiki reference -



Similarly, care must be exercised when using the slash ('/') symbol. The string of characters "1/2x" is interpreted by the above conventions as (1/2)x. The contrary interpretation should be written explicitly as 1/(2x).


Substitute (1+2) for x and it's case closed.

The division sign was covered by the mathematician.

You were taught that 3x is the same as 3*x, focus on that.
 
EarlyMon said:
From a previous wiki reference -



Similarly, care must be exercised when using the slash ('/') symbol. The string of characters "1/2x" is interpreted by the above conventions as (1/2)x. The contrary interpretation should be written explicitly as 1/(2x).


Substitute (1+2) for x and it's case closed.
Click to expand...

That one I can follow.

6/2(x+y) being equal to 3(x+y) I have trouble following.

substituting (1+2) for x in that example is still not the same, as you only have the multiplier.

So you can follow my logic, I was taught 6/2(x+y)
is
6
---
2(x+y)

which is same as

6
---
2x +2y

Sounds like something to send to school with my son, and see what answer his algebra IV professor sends back :)


EDIT: never mind - I see your reference . almost 5am here.
1/2x = 1/2(x), 6/2x = 6/2(x).

Still curious as to what his prof will say :)
 
Sharkonwheels said:
So you can follow my logic, I was taught 6/2(x+y)
is
6
---
2(x+y)
Click to expand...


That's the part that's incorrect.


6/2(x+y)

is

6
--- (x+y)
2

See the difference? You can't put just the 2 in the parenthesis, the way you're doing it, you're supposed to multiply the entire "six halves" against x and y.

The 6/2 part doesnt need a parenthesis to go before the 2 * (3) part since it's equal in order of operations and leftmost.
 
Oh, don't worry guys - it was a MAJOR facepalm moment when the light turned on :D

His example, fyi, if you were to ask me what 1/2(1+2) was, I could literally read it out as "one half times one plus two". so, 6/2, 1/2, makes no difference. Call it "six halves times one plus two" and the result is 9.

Guess that's why it's a math problem. I assume it's the 6/2 throwing folks off, I dunno. I think if you were to ask what 1/2(1+2), most people would probably get it right :)

And to answer n0ct3m, yes, it's settled, and the answer is 9.

And, sadly, the Atrix bootloader is still locked :)

Oh, and I'd like to apologize to my teachers, because there is NO WAY they taught me that 6/2(1+2) = 1 :eek:
 
9

I did that shit in my head....

The answer to the problem depends on how it's written and in this case...
6/2(1+2)
6 / 2 * 3
3*3
9

You always do math left to right, like reading a book, or this post. Always solve for whats in parentheses first. Then solve ops like square roots & powers. Then solve muliplication & division, left to right. Then addition & subtraction, left to right.

It's not phrased "6 / 2 + (1 + 2)" so how you get anything but "9" is beyond me.
 
Roze said:
I maintain that this thread is full of nerds. I don't think that puts me in a very good position now....
Click to expand...


Actually:

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