Question: What is the solution?

Solve -13963 + 5462 - 4612 = -141*u for u.

Answer: 93

Question: What is the solution?

Solve 70*d - 67*d - 15 = 0 for d.

Answer: 5

Question: What is the solution?

Solve 289*m - 7258 = -14483 for m.

Answer: -25

Question: What is the solution?

Solve 0 = -272*a - 13504 + 6704 for a.

Answer:
-25