[Blindmath] Using minus signs before negative numbers

M Lakhani muzz.lakhani at googlemail.com
Wed Apr 22 19:36:38 UTC 2015


Something like 3 - (-5) should be sufficient. 
You'll also use parentheses for multiple negatives. Therefore an expression would be correctly written like:
3 -(-5 -(-1) -(-3))
I've always remembered the order of precedence asthe mnemonic BODMAS, where B is Brackets (parentheses) & O is the Operand power. The rest of the letters are the signs respectively.
HTH
Muzz 

Sent from my iPhone

> On 22 Apr 2015, at 20:21, GianniP46 via Blindmath <blindmath at nfbnet.org> wrote:
> 
> I would use parentheses
> 3-(-5)
> 
> -----Original Message----- From: Greg Aikens via Blindmath
> Sent: Wednesday, April 22, 2015 1:52 PM
> To: Blind Math list for those interested in mathematics
> Subject: [Blindmath] Using minus signs before negative numbers
> 
> Hello everyone,
> What/where is the rule that explains how to write a minus sign
> followed by a negative number? For example, in the expression 3 minus
> negative 5. I have found specific rules/examples for when the negative
> sign is superscript, but how would I write it when the negative sign
> is on the line with the numeral?
> 
> Thanks for your help.
> 
> -Greg
> 
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