Question: What is the solution?

Solve -123 = -10*u - 113 for u.

Answer: 1

Question: What is the solution?

Solve -46*k - 1117 + 123 - 1168 = 0 for k.

Answer: -47

Question: What is the solution?

Solve -47*l + 52*l - 237 = -35*l - 637 for l.

Answer: -10

Question: What is the solution?

Solve -149*i + 108*i + 10050 = 109*i for i.

Answer:
67