Q: Solve:
Solve -76*u + 65 - 185 = -500 for u.

A: 5

Q: Solve:
Solve 0 = 564*s + 495*s - 1719 + 3837 for s.

A: -2

Q: Solve:
Solve 75 = -16*z - 349 + 88 for z.

A:
-21