Formulate a conclusion for each argument.

a. If you attend class, then you will pass the course.
If you pass the course, then you will graduate.

b. If you graduate, then you will get a good job.
If you get a good job, then you will meet the right people.
If you meet the right people, then you will become well known.

c. If x + 2x + 3 = 9, then 3x + 3 = 9.
If 3x + 3 = 9, then 3x = 6.
If 3x = 6, then x = 2.