Although diagramming as it is described by Jackson and Newberry (2016) is difficult in a discussion forum, talking about our experiences doing so is...

Although diagramming as it is described by Jackson and Newberry (2016) is difficult in a discussion forum, talking about our experiences doing so is not. Take one of the arguments from Exercise 4.18, but, in this case, do use one divisible by 3 (3, 6, 9, etc.), and diagram it on paper, following the directions in the chapter. Then, after comparing what you have with the right answer in the last section of the book, discuss what you learned from the exercise.