Answer :
Explanation:
[tex]\begin{gathered} a\text{ }\times\text{ }\frac{1}{a}\text{ }=\text{ 1} \\ \frac{1}{a\text{ }}is\text{ the invers of a} \\ This\text{ is }Multiplicative\text{ inverse} \end{gathered}[/tex][tex]\begin{gathered} a\text{ + (-a)} \\ -a\text{ is the inverse of a} \\ So\text{ this is additive inverse} \end{gathered}[/tex][tex]\begin{gathered} a\text{ + 0 = a} \\ \text{Adding zero to a number gives back same number} \\ \text{This is additive identity} \end{gathered}[/tex][tex]undefined[/tex]