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#31
Apr 28 2011 06:23pm
Quote (Mateoblast @ Apr 28 2011 07:19pm)
Actually he did it wrong : It should be 6/2(x+2)=9 then 3(x+2), because of the operation order


I distributed the 6/2 and got this

6x/2 + 12/ 2 = 9

3x + 6 = 9

3x = 3

x = 1

which is what we want

so I was right, you were right, all of the 9's are right :cheers:
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#32
Apr 28 2011 06:23pm
Quote (jimmym007 @ Apr 28 2011 07:21pm)
My life is a lie.

Just as Pi.

afk jumping off a bridge


There's nothing wrong with making a mathematical error.
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#33
Apr 28 2011 06:23pm
PEMDAS

6÷2(1+2)
6÷2(3)
6÷6
1
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#34
Apr 28 2011 06:24pm
Quote (7se7en @ Apr 28 2011 07:23pm)
PEMDAS

6÷2(1+2)
6÷2(3)
6÷6
1


The 2 being next to (3) does not mean it is multiplied first.

There is no difference between 2(3) and 2*3, thus the multiplication should be done after 6÷2
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#35
Apr 28 2011 06:24pm
Didn't let me finish uploading second picture ffs.

It depends on whether or not it's a fraction. Most people, since they're using computers write out the "/" symbol, and it means a fraction.



This is the proper way to do it. I was mistaken at this also, but it's because people use a fraction instead of a division symbol.
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#36
Apr 28 2011 06:24pm
I got a tip for you, kids

put parenthesis around every numer and see what happens

(6)÷(2)[(1)+(2)]

god that reminds me of when I tutored elem school kids
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#37
Apr 28 2011 06:25pm
Quote (xrmd @ Apr 28 2011 07:24pm)
Didn't let me finish uploading second picture ffs.

It depends on whether or not it's a fraction. Most people, since they're using computers write out the "/" symbol, and it means a fraction.

http://i52.tinypic.com/33p35gz.png

This is the proper way to do it. I was mistaken at this also, but it's because people use a fraction instead of a division symbol.


The "/" sign does represent a fraction, though. It's just that the 2 and the 3 aren't grouped. They would only be grouped if they were (2*3).
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#38
Apr 28 2011 06:25pm
Quote (xrmd @ Apr 28 2011 07:24pm)
Didn't let me finish uploading second picture ffs.

It depends on whether or not it's a fraction. Most people, since they're using computers write out the "/" symbol, and it means a fraction.

http://i52.tinypic.com/33p35gz.png

This is the proper way to do it. I was mistaken at this also, but it's because people use a fraction instead of a division symbol.


the "/" still represents a fraction

6/2 * 3/1 still equals 9
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#39
Apr 28 2011 06:26pm
Quote (NVF @ Apr 28 2011 07:25pm)
The "/" sign does represent a fraction, though. It's just that the 2 and the 3 aren't grouped. They would only be grouped if they were (2*3).


Quote (Mastersam93 @ Apr 28 2011 07:25pm)
the "/" still represents a fraction

6/2 * 3/1 still equals 9


/ isn't used. ÷ is. Shut the fuck up kiddies.
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#40
Apr 28 2011 06:26pm
bad maths troll is bad
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