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2,651,747 hits 2.7 (3 votes) Share Favorite | Flag 11 years ago by tinsley

6÷2(1+2)


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11 yrs ago - Wednesday 5/4/11 - 2:37:26 PM EST (GMT-5)
Technically, he failed if he didn't tell you they were the exact same thing.
11 yrs ago - Wednesday 5/4/11 - 2:42:53 PM EST (GMT-5)
Thinking about phrasing... poorly phrased, to say 'same thing', but I think the point is understood that replacement with modification is meant rather than operator equivalence. Exponents and roots are inverse operators, as are multiplication and division, and addition and subtraction. You could really do without one of those in each set and still make well formed expressions.
11 yrs ago - Wednesday 5/4/11 - 4:37:27 PM EST (GMT-5)
so...it's 9, right?
11 yrs ago - Wednesday 5/4/11 - 5:38:15 PM EST (GMT-5)
Well first we do 1 + 2, three. We always do parenthesis first. Then we just work our way over. 6/2, 3, then multiply 3 by 3, nine...
11 yrs ago - Wednesday 5/4/11 - 5:39:53 PM EST (GMT-5)
On Wednesday 5/4/11 - 5:38:15 PM Gollum & Smeagol wrote:
Well first we do 1 + 2, three. We always do parenthesis first. Then we just work our way over. 6/2, 3, then multiply 3 by 3, nine, stupid Hobbitses...

11 yrs ago - Wednesday 5/4/11 - 5:40:47 PM EST (GMT-5)
Strange. I didn't come up with either of those......until now. I just realized my mistake.

*Goes back to re-calculate*

The answer is one. I got 12 at first.
11 yrs ago - Wednesday 5/4/11 - 6:12:21 PM EST (GMT-5)
You have to do the bit in brackets first so its 9
11 yrs ago - Wednesday 5/4/11 - 6:24:17 PM EST (GMT-5)
On Wednesday 5/4/11 - 5:40:47 PM bookworm0812 wrote:
Strange. I didn't come up with either of those......until now. I just realized my mistake. *Goes back to re-calculate* The answer is one. I got 12 at first.




I got 1 as well, sadly, being fully aware of my math skills, it probably means the answer is 9.
11 yrs ago - Wednesday 5/4/11 - 6:44:30 PM EST (GMT-5)
I'm thinking...
6÷2x(1+2) = 3

This would be 6/2x+4x, 6/2x.

That would make X three I think. Having the variable disrupts the problem because of the distributive property.
11 yrs ago - Wednesday 5/4/11 - 6:55:58 PM EST (GMT-5)
What's with all the math questions lately?
11 yrs ago - Wednesday 5/4/11 - 7:00:34 PM EST (GMT-5)
it's 1!
11 yrs ago - Wednesday 5/4/11 - 7:02:59 PM EST (GMT-5)
It's 9.....
11 yrs ago - Wednesday 5/4/11 - 9:29:18 PM EST (GMT-5)
getting the answer 9 seems common sense to me.
11 yrs ago - Thursday 5/5/11 - 2:47:26 AM EST (GMT-5)
It's BODMAS.
Divide first, THEN multiply
11 yrs ago - Thursday 5/5/11 - 6:57:03 AM EST (GMT-5)
it's 9...
6÷2(1+2) if you look at order of operations (PEMDAS (please excuse my dear aunt sally)) you'll see we have to do whatever is in parenthesis first. And we all know 1+2 is 3, thus making the problem 6/2(3). So now we have to work the problem left to right. 6/2 is 3, and 3x3 is 9. It's that simple...
11 yrs ago - Thursday 5/5/11 - 10:17:01 AM EST (GMT-5)
I thought I posted another comment. When I went back and saw other comments, nine makes sense too. I think that's the right answer, now that I think of it.
11 yrs ago - Thursday 5/5/11 - 10:20:25 AM EST (GMT-5)
On Thursday 5/5/11 - 2:47:26 AM SasukeZ wrote:
It's BODMAS. Divide first, THEN multiply


The way I learned it for multiplying and dividing was you do whichever appears first in the equation. Let's say it was(1+2)6/2. Then you would have (3)6/2. That makes it 18/2, still making the answer 9, in this case.
11 yrs ago - Thursday 5/5/11 - 11:19:25 AM EST (GMT-5)
On Thursday 5/5/11 - 2:47:26 AM SasukeZ wrote:
It's BODMAS. Divide first, THEN multiply
On Thursday 5/5/11 - 10:20:25 AM bookworm0812 wrote:
The way I learned it for multiplying and dividing was you do whichever appears first in the equation. Let's say it was(1+2)6/2. Then you would have (3)6/2. That makes it 18/2, still making the answer 9, in this case.

that's why I said divide first then multiply. If you don't then you get 1.
11 yrs ago - Thursday 5/5/11 - 11:26:36 AM EST (GMT-5)
Well you made it sound as if you did division first simply because it preceded the word multiplication in the mnemonic BODMAS, rather than the fact that it was leftmost and the two operations have equal precedence.
11 yrs ago - Thursday 5/5/11 - 3:55:58 PM EST (GMT-5)
This is basic math really.
11 yrs ago - Thursday 5/5/11 - 4:47:46 PM EST (GMT-5)
Or, what I did was to keep 6÷2 as a fraction (6/2).

Then I distributed the fraction 6/2 to (1+2)

That leaves (6/2) + (12/2)

Combine the fractions leaving 18/2

Which divides to 9.
11 yrs ago - Thursday 5/5/11 - 5:44:53 PM EST (GMT-5)
at first i though it would be a decimal
11 yrs ago - Thursday 5/5/11 - 6:55:55 PM EST (GMT-5)
WHY DO YOU PEOPLE KEEP ASKING THESE DUMB QUESTIONS!! anyone that has a brain in their head they would know that it would be 9
11 yrs ago - Thursday 5/5/11 - 7:24:54 PM EST (GMT-5)
I was taught PEMDAS so I get 1.
11 yrs ago - Thursday 5/5/11 - 9:43:02 PM EST (GMT-5)
On Thursday 5/5/11 - 7:24:54 PM peddlefish wrote:
I was taught PEMDAS so I get 1.

But in PEMDAS Multiplication/Division are of equal precedence (as malletman pointed out) and you do them in whatever order they appear left to right.

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