RE: Can anyone explain this?

You are viewing a single comment's thread from:

Can anyone explain this?

in funny •  7 years ago 

The right one is right.....

()'s first so 3*2/6

*,/,+ and the - ='s is the way it goes.
Either way the answer is 1.

Authors get paid when people like you upvote their post.
If you enjoyed what you read here, create your account today and start earning FREE STEEM!
Sort Order:  

Actually, I am pretty sure the left one is correct:

The problem here is the programming in the Calculator. Classic vs Math Print mode
Read more here if interested:
https://en.wikipedia.org/wiki/Order_of_operations

For the actual solving of this problem gotta know:

PEMDAS

Parentheses - Perform Operation Inside Parentheses
Exponent- N/A here
Multiplication/Division - From Left to Right; So where 2(3) does = 6; you have to divide first before multiplying. The way you did it actually has a historical precedent that before 1917 would have been correct (watch here, you need sound for the end, as he explains why):

Addition/Subtraction - N/A as this was done in the parentheses

So steps:

  1. 6/2(2+1) = 6/2(3)
  2. 6/2(3) = 6/2x3
  3. 6/2x3 = 3x3
  4. 3x3 = 9

9 is the correct answer!

Math is a wonderful thing:
Substitute X for (2+1) and Y as the unknown
6/2X=Y
Remove 2X from the left side by multiplying both sides by 2X
6= 2XY
Divide both sides by 2
3=XY
Replace 2+1 for X
3=(2+1)*Y
Solve for Parenthesis
3=3Y
Divide both sides by 3
1=Y

Next talk about lies, damn lies and statistics.

You know it