Kiranga
Platinum Member
- Jan 29, 2009
- 85,762
- 145,543
The standard approach is BODMAS so the right answer is 6.
The standard approach is BODMAS.
There is no question about that.
The question is, what is BODMAS?
Up to to today my understanding was, addition takes precedence over subtraction. So my answer was 6.
Then I did some searches, there is a link that says if one has addition and subtraction, then one can just proceed left to right, doing subtraction before addition. Basically addition and subtraction have the same precedence.This is what gives the answer 12.
So, what is BODMAS?
The mnemonic suggests the answe is 6, the link tells me division and multiplication have the same rank, addition and subtraction have the same rank.
http://www.mathsisfun.com/operation-order-bodmas.html