Common Factor Cancelling in Congruence/Examples

Examples of Common Factor Cancelling in Congruence

Congruence Cancelling: $6 \equiv 12 \pmod 2 \leadsto 2 \equiv 4 \pmod 2$

We have that:

$6 \equiv 12 \pmod 2$

and so:

$2 \equiv 4 \pmod 2$