Question: What is the solution?

Solve 19*n - 5 = 21*n + 7 for n.

Answer: -6

Question: What is the solution?

Solve 22235*m = 22100*m + 8100 for m.

Answer: 60

Question: What is the solution?

Solve 5 - 5 = -18*y for y.

Answer: 0

Question: What is the solution?

Solve 289*d - 44 = 290*d for d.

Answer:
-44