Solve a Linear Congruence using Euclid's Algorithm

How to solve 17x ≡ 3 (mod 29) using Euclid's Algorithm. If you want to see how Bézout's Identity works, see    • Bézout's Identity, using Euclid's algorithm   0:00 A linear congruence... 0:30 ....is not an equation, but... 1:18 Multiplicative inverse 4:40 Euclid's Algorithm 5:58 Make the remainder the subject in each line 7:10 Backwards substitution 12:20 Multiply both sides of congruence by the multiplicative inverse 13:20 Check