Question: What is the solution?

Solve -29377 = 1168*r - 155*r for r.

Answer: -29

Question: What is the solution?

Solve 402 = 296*s + 1882 for s.

Answer: -5

Question: What is the solution?

Solve -646289 = -6715*n + 58786 for n.

Answer: 105

Question: What is the solution?

Solve 1590*q + 31 = 1637*q + 783 for q.

Answer:
-16