Question: What is the solution?

Solve 641*q - 4961 = -5602 for q.

Answer: -1

Question: What is the solution?

Solve 65 = -6*b + 5 for b.

Answer: -10

Question: What is the solution?

Solve -827 + 3626 = 228*g + 1877 - 9338 for g.

Answer: 45

Question: What is the solution?

Solve 30*r + 38 - 41 = -4*r + 65 for r.

Answer:
2