Question: What is the solution?

Solve 7*r + 10 = 31 for r.

Answer: 3

Question: What is the solution?

Solve -436 + 73 = -121*p for p.

Answer: 3

Question: What is the solution?

Solve -131*f + 280 = -244 for f.

Answer: 4

Question: What is the solution?

Solve -6*g - 18 - 18 = 0 for g.

Answer:
-6