Please help with this one!

Assume that E M F N Which of the following statements are true? (Assume that E, F, M, N, and Z are nonzero real numbers, and assume that all expressions have nonzero denominators.) Create an answer using the numbers associated with the true statements. For example, if only 1, 2, and 5 are true, then the answer is 125; if only 3 and 5 are true, then the answer is 35, etc. 1. E+Z M +Z F +Z N + Z 2. E+Z M +Z F N 3. E+M M F + N N E - F 4. M - N F N 5. E - Z M - Z F N E+M E 6. F + N