Divisibilityhard
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For the equation x ≡ a (mod m) and y ≡ a (mod n) to have a common solution, what condition must hold?
For the equation x ≡ a (mod m) and y ≡ a (mod n) to have a common solution, what condition must hold?
For the equation x ≡ a (mod m) and y ≡ a (mod n) to have a common solution, what condition must hold?