Question: What is the solution?

Solve -114*f + 93*f = -84 for f.

Answer: 4

Question: What is the solution?

Solve 5*n + 325 = 295 for n.

Answer: -6

Question: What is the solution?

Solve 479*a = 482*a + 3 for a.

Answer: -1

Question: What is the solution?

Solve 137*z + 473 = -897 for z.

Answer:
-10