Similar questions have been answered but the solutions didn't seem to give what I need.
I would like theorems and equations both to proceed as follows within each section.
Say we've begun Section 6. If I started with a theorem, it'd be Theorem 6.1. Then if I next used an equation, it would show up with numbering (6.2). The next equation or theorem (whichever is first) would be 6.3, and so on.