Course notes (chap. 1 Number Theory, chap. 2 ... - McGill University
Course notes (chap. 1 Number Theory, chap. 2 ... - McGill University
Course notes (chap. 1 Number Theory, chap. 2 ... - McGill University
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EXAMPLE<br />
7x ≡ 5 (mod 9)<br />
7 -1 ∙7x ≡ 7 -1 ∙5 (mod 9)<br />
4∙7x ≡ 4∙5 (mod 9)<br />
x ≡ 2 (mod 9)