Divisor of Integer/Examples/4 divides -12

Example of Divisor of Integer

$4 \divides \paren {-12}$

where $\divides$ indicates divisibility.

Proof

$\paren {-12} = 4 \times \paren {-3}$

$\blacksquare$

Sources

• 1980: David M. Burton: Elementary Number Theory (revised ed.) ... (previous) ... (next): Chapter $2$: Divisibility Theory in the Integers: $2.2$ The Greatest Common Divisor