Question: For an integer n, prove that if 5|(n+7), then 5|(n + 1). Let n, a, b, x, y Z with n > 0. Prove

For an integer n, prove that if 5|(n+7), then 5|(n + 1).

For an integer n, prove that if 5|(n+7), then 5|(n + 1). Let n, a, b, x, y Z with n > 0. Prove that if nla and nlb then n|(ax + by).

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