What is a negative minus a negative?

Answer 1

A negative minus a negative turns the latter into a plus positive,

for example -6 minus -3 would be :

-6 ++ 3 = -3

A minus negative always turns into a plus positive...

To get more Specific:Suppose x and y are two POSITIVE numbers so that -x and -y are negative.

Then a negative minus a negative = (-x) - (-y) = -x +y

If x > y the answer is negative

If x = y the answer is zero

If x < y the answer is positive