Question: What is the solution?

Solve 0 = 4*p + 10*p + 98 for p.

Answer: -7

Question: What is the solution?

Solve -7*w + 10 = -5*w for w.

Answer: 5

Question: What is the solution?

Solve 7*s = -3*s - 5*s for s.

Answer: 0

Question: What is the solution?

Solve 9981*s - 3208*s = 196509 + 6681 for s.

Answer:
30