In a recent survey conducted among 200 high school students regarding their extracurricular activities, the following results were recorded:

- 50 students play soccer.

- 40 students play basketball.

- 30 students play tennis.

- 10 students play soccer and basketball.

- 5 students play soccer and tennis.

- 7 students play basketball and tennis.

- 2 students play all three sports.

Using a Venn diagram, determine the total number of students who participate in at least one of these sports. Express your answer as a simplified fraction.