When can we "divide" in a linear congruence? (Number theory basics)

When can we divide both sides of congruence by the same number? discrete math, number theory, abstract algebra, Check out Max: https://youtu.be/HoCYrAjUac8 A corollary of Bezout's Lemma, https://youtu.be/s9GspKyfzUU 💪 Support this channel and get my math notes by becoming a patron: https://www.patreon.com/blackpenredpen