Question: What is the solution?

Solve 4856*s + 8529*s + 101938 - 878824 = 1614*s for s.

Answer: 66

Question: What is the solution?

Solve -4503 - 18659 = -707*u + 9963 + 17072 for u.

Answer: 71

Question: What is the solution?

Solve 25 = -7*v + 18 for v.

Answer: -1

Question: What is the solution?

Solve 14 = 4*i + 30 for i.

Answer:
-4