Hello, I need help with the following problem

Let and , so . Prove that there exists an integer such that if and only if .

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- February 8th 2009, 08:49 PMakolmanModulo Classes Problems
Hello, I need help with the following problem

Let and , so . Prove that there exists an integer such that if and only if . - February 9th 2009, 06:50 AMclic-clac
Hi

That can be done using the fact that if and are two integers,*(Bezout's identity)*

so is a solution.

(with and ) therefore