Question: What is the solution?

Solve -7 = 12*n + 5 for n.

Answer: -1

Question: What is the solution?

Solve -15702 + 6635 - 6798 - 6077 = 207*w for w.

Answer: -106

Question: What is the solution?

Solve 0 = -16*o + 5*o for o.

Answer: 0

Question: What is the solution?

Solve 9*u - 768 = -29*u + 6*u for u.

Answer:
24