Non-examples Of zero pairs?

A zero pair is created when a pair of numbers, one positive and the other negative, equals a sum of zero. The main purpose of a zero pair is to simplify the process of addition and subtraction in complex mathematical equations featuring multiple numbers and variables. For example, in the problem 2+6-3-2, the positive 2 and the negative 2 cancel each other out because they are a zero pair, thus reducing the problem to 6-3. Examples of Zero Pair: - 9 + 9 = 0