Question

se (2,3) e ponto medio de AB,com A (n,5) e B(4,m),QUANTO VALE M+N?

Answer 1

 2 = (n+4) /2
2.2 = n+4
4 = n+4
n = 4 - 4
n = 0

3 = (5+m) /2
3.2 = 5+m
6 = 5+m
m = 6 - 5
m = 1

m + n = 1 + 0
m + n = 1