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  3. let a and b be integers which are not both zero. (

Let a and b be integers which are not both zero. (a) If c is an...

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Advance Math

Let a and b be integers which are not both zero.

(a) If c is an integer such that there exist integers x and ywith ax+by = c, prove that gcd(a, b) | c.

(b) If there exist integers x and y such that ax + by = 1,explain why gcd(a, b) = 1.

(c) Let d = gcd(a,b), and write a = da′ and b = db′ for somea′,b′ ∈ Z. Prove that gcd(a′,b′) = 1.

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