how would we determine the solution of
4x≡1 (mod 27)
which is specifically negative and closest to 0. I know we first get the gcd, but what do we do after that?
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Is the answer -6.5? – Ishraaq Parvez Dec 18 '20 at 09:13
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Use one of the linked methods (and subtract $27$ to make it negative if need be). – Bill Dubuque Dec 18 '20 at 09:16
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Come on! It's $x=7$ – Raffaele Dec 18 '20 at 12:51