Question: What is the solution?

Solve 7*s - 108*s - 2498 = 2552 for s.

Answer: -50

Question: What is the solution?

Solve -316*x + 14568 + 18566 + 3316 = 1142*x for x.

Answer: 25

Question: What is the solution?

Solve 507 + 4344 = 231*f for f.

Answer: 21

Question: What is the solution?

Solve 2*k = -47 + 51 for k.

Answer:
2