Question: What is the solution?

Solve -56 = u - 54 for u.

Answer: -2

Question: What is the solution?

Solve -156*p - 1237 + 6319 = 226*p - 261*p for p.

Answer: 42

Question: What is the solution?

Solve -2167*q = -2150*q for q.

Answer: 0

Question: What is the solution?

Solve 739*u + 504*u - 79*u = 145*u + 25475 for u.

Answer:
25