Question: What is the solution?

Solve -17*f = -66*f + 343 for f.

Answer: 7

Question: What is the solution?

Solve -387*f - 96 = -379*f for f.

Answer: -12

Question: What is the solution?

Solve 193*r - 10 = 191*r for r.

Answer: 5

Question: What is the solution?

Solve -589*w - 30453 = -2933 - 9957 + 30735 for w.

Answer:
-82