On Sun, Mar 11, 2012 at 10:37 AM, Sean Breheny <shb7@cornell.edu> wrote:
> In elementary school (US) I was taught: PEMDAS =3D Please Excuse My Dear
> Aunt Sally
>
> or
>
> Parentheses
> Exponents
> Multiplication
> Division
> Addition
> Subtraction
>
> Although, I think this is misleading at best. For example, it suggests
> that addition should precede subtraction, as in:
>
> 3-2+4 would be 3-(2+4) rather than (3-2)+4. As others have pointed
> out, this has to do with association and not order of operations.
>
> Sean


I was taught the same, however my math teacher pointed out that
addition and subtraction have the same priority.
--=20
Martin K.
--=20
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