Question

M/-3+8=5 cómo se resuelve?

Answer 1

m in (-oo:+oo)

m/(-3)+8 = 5 // - 5

m/(-3)-5+8 = 0

3-1/3*m = 0 // - 3

-1/3*m = -3 // : -1/3

m = -3/(-1/3)

m = 9

m = 9

Answer 2

m : -3 + 8 = 5
m : -3 = 5 - 8
m : - 3 = -3
m = -3 . -3
m = 9

Comprobamos:
m : -3 + 8 = 5
9 : -3 + 8 = 5
-3 + 8 = 5
5 = 5