Given two point (x,y) and (s,t), the midpoint has coordinates [tex]( \frac{x+s}{2} , \frac{y+t}{2} )[/tex]
Applying the above formula to the given point we get :
[tex]( \frac{4-3}{2} , \frac{-7+5}{2} )=(\frac{1}{2},-1)[/tex]
The midpoint is [tex](\frac{1}{2},-1)[/tex]