Question: What is the solution?

Solve o + 5 = -0 for o.

Answer: -5

Question: What is the solution?

Solve 191*u = 119*u + 114*u - 531 + 1455 for u.

Answer: -22

Question: What is the solution?

Solve 29*a + 73 = 10*a + 35 for a.

Answer: -2

Question: What is the solution?

Solve -1240 = 265*v + 3265 for v.

Answer:
-17