Sum
Solve 5x ≡ 4 (mod 6)
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Solution
5x ≡ 4 (mod 6)
5x – 4 = 6M for some integer n.
5x = 6n + 4
x = `(6"n" + 4)/5` where n = 1, 6, 11, …..
∴ x = 2, 8, 14, …
Concept: Modular Arithmetic
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