Answer
$\left(-\dfrac{2}{5}, -\dfrac{1}{10}\right)$
Work Step by Step
RECALL:
The midpoint of the line segment whose endpoints are $(x_1, y_1)$ and $(x_2, y_2)$ can be found using the midpoint formula:
$\text{midpoint}=\left(\dfrac{x_1+x_2}{2}, \dfrac{y_1+y_2}{2} \right)$
Use the formula above to obtain:
$\text{midpoint} = \left(\dfrac{-\frac{2}{5}+(-\frac{2}{5})}{2}, \dfrac{\frac{7}{15}+(-\frac{4}{15})}{2}\right)=\left(\dfrac{-\frac{4}{5}}{2}, \dfrac{-\frac{3}{15}}{2}\right)
\\\text{midpoint} = \left(-\dfrac{2}{5}, -\dfrac{3}{30}\right)= \left(-\dfrac{2}{5}, -\dfrac{1}{10}\right)$
