Question: What is the solution?

Solve -12*w - 2*w + 5*w = 6*w for w.

Answer: 0

Question: What is the solution?

Solve -11*s - 6 = -8*s for s.

Answer: -2

Question: What is the solution?

Solve 34902820*f + 1161 = 34902899*f - 1683 for f.

Answer: 36

Question: What is the solution?

Solve 67*s = 185*s + 5470 + 3087 + 1473 for s.

Answer:
-85