Răspuns:
Explicație pas cu pas:
[tex]\bf (12 + x) ~\vdots~x[/tex]
[tex]\bf x ~~\big|~ (x + 12)[/tex]
[tex]\bf x~ \big|~ x \implies x~ \big|~ 12\implies x\in D_{12}[/tex]
[tex]\blue{\bf Daca~x \in \mathbb{Z}\implies x \in\{-12;-6;-4;-3;-2;-1;1;2;3;4;6;12\}}[/tex]
[tex]\green{\bf Daca~x \in \mathbb{N}\implies x \in\{1;2;3;4;6;12\}}[/tex]
