Question: What is the solution?

Solve -54*d - 51 = -71*d for d.

Answer: 3

Question: What is the solution?

Solve 6562*n - 527*n = -258*n - 339822 for n.

Answer: -54

Question: What is the solution?

Solve 3644 = -398*l + 2718 - 9422 for l.

Answer: -26

Question: What is the solution?

Solve -7*a = a + 40 for a.

Answer:
-5