Comments by a williams(texas) Most recent public comments by a williams(texas) https://nowcomment.com/users/53145 to me you took one slice then you subtract and get answer https://nowcomment.com/documents/135231?scroll_to=1307610 https://nowcomment.com/documents/135231?scroll_to=1307610 Mon, 25 Mar 2019 14:33:10 -0400 i see what it is it has to do with negative and positive https://nowcomment.com/documents/135259?scroll_to=1307585 https://nowcomment.com/documents/135259?scroll_to=1307585 Mon, 25 Mar 2019 14:29:56 -0400