Question: What is the solution?

Solve -22 = 91*n - 46 + 661 for n.

Answer: -7

Question: What is the solution?

Solve 0 = -66048*i + 65557*i + 28478 for i.

Answer: 58

Question: What is the solution?

Solve 16*w + 408 = -35*w for w.

Answer: -8

Question: What is the solution?

Solve 58 - 83 = 5*u for u.

Answer:
-5