Question: What is the solution?

Solve -38*x = -39*x + 4 for x.

Answer: 4

Question: What is the solution?

Solve -9733*c - 9 = -9734*c for c.

Answer: 9

Question: What is the solution?

Solve s + 128 = 133 for s.

Answer: 5

Question: What is the solution?

Solve -89*v - 10*v + 9240 = 11*v + 10*v for v.

Answer:
77