Question: What is the solution?

Solve -51*d - 66 = -18*d for d.

Answer: -2

Question: What is the solution?

Solve 112*m = -36332 + 12983 + 18869 for m.

Answer: -40

Question: What is the solution?

Solve 4206*n = 4016*n + 10450 for n.

Answer: 55

Question: What is the solution?

Solve 779*d - 1586*d = -790*d + 408 for d.

Answer:
-24