Question: Let n Z. Prove that if 3 | n + 1 then 3 | n + 5n+ 5. Let a E Z. Prove that

Let n Z. Prove that if 3 | n + 1 then

Let n Z. Prove that if 3 | n + 1 then 3 | n + 5n+ 5. Let a E Z. Prove that if 5a +11 is odd then 9a + 3 is odd.

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