Question: What is the solution?

Solve 0 = 3554*i - 3563*i - 45 for i.

Answer: -5

Question: What is the solution?

Solve -544391 = 221*w - 553673 for w.

Answer: 42

Question: What is the solution?

Solve -72*z + 42*z - 77 = -37*z for z.

Answer: 11

Question: What is the solution?

Solve -10*u + 10 = -5*u for u.

Answer:
2