Find all a(integers) that [tex](5a - 3:7a^2 - a + 1) = 1[/tex](adsbygoogle = window.adsbygoogle || []).push({});

I only know that

[tex] d|7a^2 - a + 1 [/tex]

[tex] d|5a - 3 [/tex]

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# Homework Help: Maximum common divisor

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