Q: What is the solution?
Solve 388*k - 166*k + 7047 = 116*k + 187*k for k.

A: 87

Q: What is the solution?
Solve 9*n + 36 = 21*n for n.

A: 3

Q: What is the solution?
Solve 568*u - 5157 = -45 for u.

A:
9