Does negative zero exist? In the set of real numbers, there is no negative zero. However, can you please verify if and why this is so? Is zero inherently "neutral"? 

My thought on the problem is that all numbers can be substituted for variables. -1 = -x. "-x" is negative one times "x". My thinking is that negative 1 is negative 1 times 1. So in conclusion, I pulled that negative zero (can be expressed by "-a") is negative 1 times 0, or just 0 (-a = -1 * a).
