Question: What is the solution?

Solve 20*k - 794 = -7*k - 416 for k.

Answer: 14

Question: What is the solution?

Solve 1659*s = -1662*s + 3341*s + 220 for s.

Answer: -11

Question: What is the solution?

Solve -9*i + 197 = 152 for i.

Answer: 5

Question: What is the solution?

Solve -39*s = -3*s - 4592 + 3764 for s.

Answer:
23