Question: What is the solution?

Solve -198 - 889 + 64 = 93*v for v.

Answer: -11

Question: What is the solution?

Solve -6559 = -828*u - 658*u - 53497 - 45194 for u.

Answer: -62

Question: What is the solution?

Solve -87*x - 117 - 115 = 530 - 153 for x.

Answer: -7

Question: What is the solution?

Solve f - 1 = -0*f for f.

Answer:
1