Question: What is the solution?

Solve 0 = 42*k - 14*k - 252 for k.

Answer: 9

Question: What is the solution?

Solve 0 = 34*b + 686528 - 687004 for b.

Answer: 14

Question: What is the solution?

Solve -43*w + 157202676 = 157202246 for w.

Answer: 10

Question: What is the solution?

Solve 2650496 = -u + 2650500 for u.

Answer:
4