Question: What is the solution?

Solve 0*x = 5*x - 25 for x.

Answer: 5

Question: What is the solution?

Solve 51*y + 71 = -133 for y.

Answer: -4

Question: What is the solution?

Solve -16 = 4*m - 20 for m.

Answer: 1

Question: What is the solution?

Solve 19 = -2*f + 17 for f.

Answer:
-1