Question: What is the solution?

Solve 0 = -387895*d + 387809*d - 3010 for d.

Answer: -35

Question: What is the solution?

Solve -53207843*a = -53207504*a - 10170 for a.

Answer: 30

Question: What is the solution?

Solve 0 = -1917*l + 1878*l for l.

Answer: 0

Question: What is the solution?

Solve 154*u - 548*u + 2000 = 5126 + 1996 for u.

Answer:
-13