Inverse property — lesson. Mathematics State Board, Class 7.

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Adding the opposite of a number to the same number will equal to \(0\) (zero).

Inverse property of addition: For every integer (\(a\)) there exists another opposite integer (\(-a\)) such that:

(a) + (- a) = 0.

Where \(a\) is an integer, the additive inverse of \(a\) is \(-a\).

Example:

\begin{array}{l} (3) + (- 3) = 0. \\ (20) + (- 20) = 0. \end{array}

Important!

1. Additive inverse of \(a\) is \(-a\).

2. Addition and subtraction are inverse operations of each other.

Did you find an error?

9. Inverse property