Question: What is the solution?

Solve -20*s = -8*s - 12 for s.

Answer: 1

Question: What is the solution?

Solve -504*p = 30*p - 9091 - 9065 for p.

Answer: 34

Question: What is the solution?

Solve 0 = -10*v + 13*v - 15 for v.

Answer: 5

Question: What is the solution?

Solve -12*d - 12*d - 144 = 0 for d.

Answer:
-6