Question: What is the solution?

Solve 0 = -7*n - 107 + 100 for n.

Answer: -1

Question: What is the solution?

Solve -2499*c = 387*c + 158730 for c.

Answer: -55

Question: What is the solution?

Solve 28*c - 11*c - 611 = -30*c for c.

Answer: 13

Question: What is the solution?

Solve 13*h = -61*h - 296 for h.

Answer:
-4