Question: What is the solution?

Solve 931932 + 551668 = -18545*h for h.

Answer: -80

Question: What is the solution?

Solve 0 = 115*i - 13*i + 918 for i.

Answer: -9

Question: What is the solution?

Solve 258*d - 407*d + 17680 = 531*d for d.

Answer: 26

Question: What is the solution?

Solve -6302 = 185*r + 913 for r.

Answer:
-39