Question: What is the solution?

Solve -68*s + 1025 = 55*s + 164 for s.

Answer: 7

Question: What is the solution?

Solve -130*y + 2176*y = -74766 - 37764 for y.

Answer: -55

Question: What is the solution?

Solve 3*w = 2*w + 6*w + 45 for w.

Answer: -9

Question: What is the solution?

Solve 0 = i - 162 + 165 for i.

Answer:
-3