Question: What is the solution?

Solve -146 = -206*f + 163 - 309 for f.

Answer: 0

Question: What is the solution?

Solve -58*l - 226*l + 116*l = 4536 for l.

Answer: -27

Question: What is the solution?

Solve 33*w - 51*w = 36 for w.

Answer: -2

Question: What is the solution?

Solve -1116*u = -200*u + 254*u - 16380 for u.

Answer:
14