Q: Solve:
Solve 70*u = -109*u + 1252 + 398 + 319 for u.

A: 11

Q: Solve:
Solve -81*x = -174*x - 1953 for x.

A: -21

Q: Solve:
Solve 0 = -44229*z + 44314*z + 7140 for z.

A:
-84