Question

Dacă 12 plus x divide x atunci x aparține (..) Dau coroana!!​

Answer 1

Răspuns:

Explicație pas cu pas:

$\bf (12 + x) ~\vdots~x$  

$\bf x ~~\big|~ (x + 12)$

$\bf x~ \big|~ x \implies x~ \big|~ 12\implies x\in D_{12}$  

$\blue{\bf Daca~x \in \mathbb{Z}\implies x \in\{-12;-6;-4;-3;-2;-1;1;2;3;4;6;12\}}$

$\green{\bf Daca~x \in \mathbb{N}\implies x \in\{1;2;3;4;6;12\}}$