This is a massive beast of an example; what is the essence we need to extract from this? I doubt we’re expected to regurgitate the process of completing this example on the exam…or do we?
I believe example 4 in 2019 curriculum is different question.
Are you looking at example 4 (a trivial 2-pager starting on p. 180) or example 5 (a modest 10-pager starting on p. 183)?
If the former, you ain’t seen nothin’ yet!
…That’s a wet blanket.
and example 5 lol this looks like it ain’t as easy and others make it out to be