Question: What is the solution?

Solve 55*m - 28*m = 28*m - 7 for m.

Answer: 7

Question: What is the solution?

Solve 16332*f - 27 - 47 = 16444*f + 150 for f.

Answer: -2

Question: What is the solution?

Solve 24*k + 16 = 20*k for k.

Answer: -4

Question: What is the solution?

Solve 59*s - 74*s + 135 + 195 = 0 for s.

Answer:
22