Question

What is additive inverse of a number? What is the additive inverse of $7$ and $-5$?

Answer 1

Definition: 1 Mark
Inverse of 7 and -5: 1 Mark

The additive inverse of a number is what you add to the number to get zero. i.e. additive inverse of $5$ is $-5$ as $5+(-5)=0$
Additive inverse of $7$ is $-7$ and additive inverse of $-5$ is $5$.