Total 52 students.
52 - 17 = 35 students left
35 - 5 = 30 students left
30 - 2 = 28 students left
Each class has 11 students that play ONE sport, which means 22 total in 2 classes. You're on your own now! It's not that hard, I'm sure you'll figure it out.
2n + 20 = -2
20 + 2 = -2n
22 = -2n
22/2 = n
11 = n
First of all, this would be history, not mathematics. But, the answer that I know is "The imposition of a foreign viewpoint or civilization on a <span>people."</span>
