Respuesta :

chikafujiwara

Answer:

(27/2,-2)

Step-by-step explanation:

Use the midpoint formula.

((x1+x2)/2,(y1+y2)/2).

(18 + 9)/2 = 27/2

(5 - 9)/2 = -2

(27/2,-2)
Same answer as the first one above !