Simplify the expression negative of negative 6, written as -(-6).

1. The expression asks for the opposite of negative 6. 2. The opposite of negative 6 is positive 6, since it is the same distance from zero but on the other side. 3. Leaving the value as negative 6, or treating the two minus signs as canceling to zero, both misread what the opposite notation means. _Source: OpenStax Prealgebra (CC BY 4.0), Ch 3 "Integers", section 3.1 Introduction to Integers_