The Rectangular Coordinate Systems and Graphs · Exercise 63

Given these four points: $A\left(1,3\right)$, $B\left(–3,5\right)$, $C\left(4,7\right)$, and $D\left(5,–4\right)$ find the coordinates of the midpoint of line segments $\overline{\text{AB}}$ and $\overline{\text{CD}}.$

Its source prints no answer for this problem, so there's nothing to check against.

OpenStax, Algebra and Trigonometry 2e · §2.1 The Rectangular Coordinate Systems and Graphs · Exercise 63