Question: What is the solution?

Solve 5*d + 20 = 45 for d.

Answer: 5

Question: What is the solution?

Solve 0 = 6*s - 5*s + 5 for s.

Answer: -5

Question: What is the solution?

Solve -2*j = 2*j + 20 for j.

Answer: -5

Question: What is the solution?

Solve 0 = 519*g - 263*g + 464*g + 13680 for g.

Answer:
-19