Question: What is the solution?

Solve 0 = -181*i + 81*i + 100 for i.

Answer: 1

Question: What is the solution?

Solve -9*u + 28 + 24 = 34 for u.

Answer: 2

Question: What is the solution?

Solve -4*a - 385 = -111*a + 1434 for a.

Answer: 17

Question: What is the solution?

Solve -9*v = 95 - 149 for v.

Answer:
6