Question: What is the solution?

Solve -1056485 = 20*a - 1056385 for a.

Answer: -5

Question: What is the solution?

Solve -822*r - 30974 = -2183*r + 19383 for r.

Answer: 37

Question: What is the solution?

Solve -9*l + 45 - 9 = 0 for l.

Answer: 4

Question: What is the solution?

Solve -1177*b + 246615 + 17805 = 3808*b - 4770 for b.

Answer:
54