I am using
align*, but I still need an equation number. I know one solution is to use
align and add
\nonumber to all lines but the last. Is there a 'lazy' way to do it?
I searched a little and found similar ones suggesting use
Show equation number only once in align environment
Unfortunately, due to the page break issue I have, I need to use
split won't auto page break, as described in Long equation does not page break.