Question

# Find the additive inverse of $- \dfrac{a}{b}$${\text{A}}{\text{. }}\dfrac{a}{b} \\ {\text{B}}{\text{. }}\dfrac{b}{a} \\ {\text{C}}{\text{. }}\dfrac{{ - b}}{a} \\ {\text{D}}{\text{. None of these}} \\$

Hint- Try to find what should be added in $- \dfrac{a}{b}$ to get 0.
So, here we have to find additive inverse of $- \dfrac{a}{b}$
So the additive inverse of $- \dfrac{a}{b}$ will be negative of it.
That is $\dfrac{a}{b}$
Hence Option ${\text{A}}{\text{. }}\dfrac{a}{b}$ is correct.