Point M (5,-7) is the midpoint of CD. If C is (2, -3), find the coordinates of D. Please Help

Midpoint formula ((x1 + x2)/2), (y1 + y2)/2))
Plug in with given information
((2 + x2)/2), (-3 + y2)/2)) = (5, -7)
Solve for x2 and y2
((2 + x2)/2) = 5
2 + x2 = 10, x2 = 8
((-3 + y2)/2) = -7
-3 + y2 = -14, y2 = -11
Therefore D coordinate = (8,-11)