Find the additive inverse of:

$\dfrac{-3}{23}$

To find the additive inverse of any rational number, change its sign.

Changing the sign of $\dfrac{-3}{23}$, we get $\dfrac{3}{23}$.

[Check : $\dfrac{-3}{23} + \dfrac{3}{23} = \dfrac{0}{23} = 0$]

Hence, the additive inverse of $\mathbf{\dfrac{-3}{23} \text{ is } \dfrac{3}{23}}$.