Question: What is the solution?

Solve 165*r + 514*r - 10302 = 73*r for r.

Answer: 17

Question: What is the solution?

Solve 647 + 446 = -131*y - 86 for y.

Answer: -9

Question: What is the solution?

Solve 27*b - 791 = 598 + 474 for b.

Answer: 69

Question: What is the solution?

Solve -112*b - 142*b = 2032 for b.

Answer:
-8