Q: What is the solution?
Solve 265*v = 139*v - 2520 for v.

A: -20

Q: What is the solution?
Solve 14*f + 38*f + 84 = -72 for f.

A: -3

Q: What is the solution?
Solve 9124 + 8511 - 3165 = -3066*u - 43784 for u.

A:
-19