Consider the following premises. q_7. t <-> t_3. t -> ~q_7. p <-> t_3. Can we infer p from them? If possible, name the inference rules being used at each step.
 From t -> ~q_7, q_7 we can infer ~t via modus tollens. From t <-> t_3, ~t we can infer ~t_3 via biconditional elimination. Finally, from p <-> t_3, ~t_3 we can infer ~p via biconditional elimination, which contradicts p. Therefore, the answer is no.