Question: What is the solution?

Solve -13*o + 12283 - 12335 = 0 for o.

Answer: -4

Question: What is the solution?

Solve -151*w - 597 - 193 - 453 = -264*w for w.

Answer: 11

Question: What is the solution?

Solve 0 = 6*u - 5241 + 5301 for u.

Answer: -10

Question: What is the solution?

Solve -204*o + 382*o - 165*o = 494 for o.

Answer:
38