Q: Solve 87*v - 6006 = 87*v + 286*v for v.

A: -21

Q: Solve 19*v = -22*v + 103 + 471 for v.

A: 14

Q: Solve 266 - 221 = 9*z for z.

A: 5

Q: Solve 1513913*f = 1513940*f - 378 for f.

A:
14