Question: What is the solution?

Solve 2*c = 1587 - 1593 for c.

Answer: -3

Question: What is the solution?

Solve -44*i + 340 = 17*i - 87 for i.

Answer: 7

Question: What is the solution?

Solve 6331*d = 6358*d - 378 for d.

Answer: 14

Question: What is the solution?

Solve 59*y + 2009115 = 2005221 for y.

Answer:
-66