Question: What is the solution?

Solve 0 = 269*n - 407*n - 2484 for n.

Answer: -18

Question: What is the solution?

Solve 100*x + 18*x + 1764 = 34*x for x.

Answer: -21

Question: What is the solution?

Solve -35*a = 6*a - 82 for a.

Answer: 2

Question: What is the solution?

Solve 9 = 13*j - 16*j for j.

Answer:
-3