Let l, m, n e Z. Provide a direct proof for the following: If it is the case that I is an odd integer, and either mº is an even integer or I is an even integer (or both), and either mº is an odd integer or n +3 is an even integer (or both), then 2n + 7 is an odd integer. You should assume that odd and even are defined as presented in the videos. A proper setup should include a restatement of the conjecture, a valid argument, and a conclusion.