Question: Exercise 1. Determine all integers a satisfying a? = 1 (mod 5) and 2x = 17 (mod 7) in the same time. Exercise 2. Find

Exercise 1. Determine all integers a satisfying a? = 1 (mod 5) and 2x = 17 (mod 7) in the same time. Exercise 2. Find the smallest positive residue of 18" modulo 15

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