Respuesta :

(3/8)*n = -1/4 // + -1/4

(3/8)*n-(-1/4) = 0

(3/8)*n+1/4 = 0

3/8*n+1/4 = 0 // - 1/4

3/8*n = -1/4 // : 3/8

n = -1/4/3/8

n = -2/3

n = -2/3