Question: What is the solution?

Solve 10981*r + 130134 = -550688 for r.

Answer: -62

Question: What is the solution?

Solve 11*x = 133 - 122 for x.

Answer: 1

Question: What is the solution?

Solve 1319*r - 2250*r = -36309 for r.

Answer: 39

Question: What is the solution?

Solve 839*h - 853*h + 140 = 0 for h.

Answer:
10