Examples of Additive Inverses
| Number | Additive Inverse |
| 10 | -10 |
| ½ | -½ |
| -5 | 5 |
| -¾ | ¾ |
| $$ \frac a b $$ | $$ - \frac a b $$ |
| $$ - \frac c d $$ | $$ \frac c d $$ |
Ask yourself, what can I add to real number, which we'll call $$a $$, so that the resulting sum is zero. The answer is $$-a $$.
The additive inverse of any number $$ a $$ is $$-a $$.
