Talk:Absolute value

If x is a negative number, then | x | = − x. This is incorrect. It should read "If x is a negative number, then | - x | = x."

The latest change is an error. If x is a negative number, then -x is a positive number! It was correct before, the absolute value of x, where x is negative, is -x: If x is negative, | x | = − x

I see what you're saying...I think the working just needs to be changed. |-x| = x but if you declare before hand that x is negative to begin with then |x| is negative, but if you say it equals x, x is still assumed negative. Let's just reword the whole thing, shall we? --David B (talk) 20:48, 14 April 2016 (EDT)

How about simply:

$|x|=x$

$|-x|=x$

or even show all the signs:

$|+x|=+x$

$|-x|=+x$

What do you think?--David B (talk) 20:51, 14 April 2016 (EDT)