Question: What is the solution?

Solve 8 = 3*b - 7 for b.

Answer: 5

Question: What is the solution?

Solve 3380 = 175115*n - 175180*n for n.

Answer: -52

Question: What is the solution?

Solve -2 - 9 = -10*k + 13*k + 1 for k.

Answer: -4

Question: What is the solution?

Solve -57*l - 62 + 89 = -87 for l.

Answer:
2