THERE IS NO SUCH THING AS '0'.
Numbers are not linear(represented by a number line) but circular with infinity as a point. Number addition and subtraction are done in relation to infinity.
There is no such thing as a negative number. Period.
infinity + infinity = infinity
infinity - infinity = infinity
infinity * infinity = infinity
infinity / infinity = infinity
infinity + 1 = infinity + 1
infinity - 1 = infintity -1
(infinity + 1) - (infinity +1 ) = infinity
(infinity + 1) - (infinity -1) = infinity
1 + 1 = 2
NOTHING of 'existence' = 0
1 - 1 will never = 0. That is like saying the next number of .00000000000000000000000000000000000000000000000000000000000...1 is 0. That will NEVER occur.