a. Prove that for all integers m and n, m = n (mod 3) if,
Chapter 8, Problem 17E(choose chapter or problem)
Problem 17E
a. Prove that for all integers m and n, m = n (mod 3) if, and only if, m mod 3 = n mod 3.
b. Prove that for all integers m and n and any positive integer d, m = n (mod d) if, and only if, m mod d = nmodd.
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