Question
I need to explain why subtracting a negative is like adding
Answers
Ms. Sue
Check this site.
http://www.cimt.plymouth.ac.uk/projects/mepres/book7/bk7i15/bk7_15i1.htm
http://www.cimt.plymouth.ac.uk/projects/mepres/book7/bk7i15/bk7_15i1.htm