Question: What is the solution?

Solve 755 - 2162 = 123*s + 807 for s.

Answer: -18

Question: What is the solution?

Solve n - 12 = 5*n for n.

Answer: -3

Question: What is the solution?

Solve 0 = -30370*q + 27872*q - 56076 - 191226 for q.

Answer: -99

Question: What is the solution?

Solve -78*o - 4152 = -185*o - 16*o + 4704 for o.

Answer:
72