I just cannot solve questions on post-increment and pre-increment. It alsteps confuses me. Any tricks which will help me understand it?

[Dawid]

Hi ! Hello, I would like to ask you a problem that I can not answer, i just cannot solve questions on post-increment and pre-increment. it alsteps confuses me. any tricks which will help me understand it? Thank you, please help me as soon as possible. I thank you in advance.