Q: What is the solution?
Solve 2809 = -399*t - 4661 - 9031 + 3733 for t.

A: -32

Q: What is the solution?
Solve -13*s = -11*s + 10 for s.

A: -5

Q: What is the solution?
Solve -53 = 2*u - 45 for u.

A:
-4