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What's the answer?


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9 replies to this topic

#1 gno1track

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Posted 27 September 2016 - 10:37 PM

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#2 TsVk!

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Posted 27 September 2016 - 11:07 PM

7

 

PEDMAS



#3 gno1track

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Posted 27 September 2016 - 11:18 PM

why = 7? :(
anyone else have an answer?

#4 TsVk!

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Posted 27 September 2016 - 11:22 PM

PEMDAS

 

Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction

 

is the order of equation.

 

6 - 1 x 0 + 2 / 2 =

 

6 - (1 x 0) + ( 2 / 2) =

 

6 - 0 + 1 = 7


Edited by TsVk!, 27 September 2016 - 11:27 PM.


#5 TsVk!

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Posted 27 September 2016 - 11:27 PM

Now you can be part of the 1% by remembering your 4th grade maths :wink:



#6 gno1track

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Posted 27 September 2016 - 11:49 PM

why 6 - 0 + 1 = 7?

#7 TsVk!

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Posted 28 September 2016 - 12:03 AM

Because you work left to right. PEMDAS is not a strict rule it is a guide to equation.

 

Here's some more reading if you're really interested...


Edited by TsVk!, 28 September 2016 - 12:19 AM.


#8 TsVk!

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Posted 28 September 2016 - 12:23 AM

Here's the best way I can explain it...

 

You read negative numbers, you do not subtract positive.



#9 TsVk!

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Posted 28 September 2016 - 04:54 AM

Sooo....

 

6 - 1 x 0 + 2 / 2 =

 

6 - (1 x 0) + ( 2 / 2) =

 

6 - 0 + 1 =

 

6 + (-0 + 1) =

 

6 + 1 = 7



#10 TsVk!

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Posted 28 September 2016 - 05:08 AM

which is handy when you start looking at longer sums like

 

7 - 6 + 2 - 3 + 6 - 4 =

 

7 + -6 + 2 + -3 + 6 + -4 =                                     (not: 7 - 8 - 9 - 4 = )

 

(7 + -6) + (2 + -3) + (6 + -4) =

 

1 + -1 + 2 = 2

 

Now we are the envy of every 10 year old and part of the 1%. :)






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