Question: What is the solution?

Solve -1530*r + 1598*r = -340 for r.

Answer: -5

Question: What is the solution?

Solve 0 = 54*b + 127 - 937 for b.

Answer: 15

Question: What is the solution?

Solve 41 = -5*r + 46 for r.

Answer: 1

Question: What is the solution?

Solve 0 = -55*q + 37 + 348 for q.

Answer:
7