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Number Theory Level 1

Let \(a\) and \(b\) be integers where \(a > 2\) . If \(4b - 1\) and \(5b + 2\) are both multiples of \(a\), find the value of \(a\).

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Excel in math and science

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It's hard to learn from lectures and videos

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including olympiad champions, researchers, and professionals.

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by Xingyu Shui

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