Q: Solve 0 = 669*u - 235*u + 8246 for u.

A: -19

Q: Solve 6 - 1 + 11 = 2*f for f.

A: 8

Q: Solve 866*w + 8624 = 1453 - 2355 for w.

A: -11

Q: Solve 144*v - 149*v - 120 = 0 for v.

A:
-24