Question

tim so nguyen N biet n-4 la 12

Answer 1

de bai?
 

Answer 2

to nham so nguyen N biet n-4 lchia het n-1

Answer 3

Ta có : \(n-4⋮n-1\)

          \(\left(n-1\right)-3⋮n-1\)

          \(\Rightarrow3⋮n-1\Leftrightarrow n-1\inƯ\left(3\right)=\left\{-3;-1;1;3\right\}\)

n-1	-3	-1	1	3
n	-1	0	2	4

Vậy \(n\in\left\{-1;0;2;4\right\}\)