Q: Solve 131*u - 129*u + 12 = 0 for u.

A: -6

Q: Solve 0 = -1228911*z + 1229073*z + 11178 for z.

A: -69

Q: Solve -11308*w = -10602*w - 40948 for w.

A: 58

Q: Solve 451*u + 403*u + 659*u + 80844 + 6910 = 0 for u.

A:
-58