[lupire]

You only type in the reasons, not the results. Lean computes the result for you. Otherwise, if you do all the work yourself, you wouldn't need Lean :-)

[hammock]

I still am completely lost. Can you give me the answer so I can see what input is supposed to look like?

In my head I want to solve it with 37=37, x=x and q=q. And then run rfl

[sn9]

If it shows you something of the form `X=X` like `37=37`, you then type in `rfl` to assert that they are equal by the reflective property which completes the proof.