Find the midpoint of the line segment joining the points P1 and P2

Question

P1=(3,2)
P2=(-5,7)

The midpoint is=

Answer 1

add the x's, divide by 2
add the y's , divide by 2

midpoint = ( (3-5)/2 , (2+7)/2)
= (-1, 9/2)

Answer 2

-1,9/2

Answer 3

If C is the midpoint of AB where A (2,5) and B (-2,-3). Find the coordinates of C