When modeling negative thirteen plus positive twelve using red chips for negative integers and black chips for positive integers, how many and what color chips remain for the solution?

Question

anonymous · Answer

-13 + 12 = ???

Well... 12 (twelve) black chips are used, and 13 (thirteen) red chips are used.

To complete the equation, 12 - 13 (rearrangement) = -1. Meaning we would have one red chip as the solution, is what I am going to assume they are asking. (: