Question: What is the solution?

Solve 105*u - 990 = -45 for u.

Answer: 9

Question: What is the solution?

Solve -62*l = -403*l - 6202 + 746 for l.

Answer: -16

Question: What is the solution?

Solve 0 = 60*a - 59*a - 7 for a.

Answer: 7

Question: What is the solution?

Solve 20 = -120*b + 20 for b.

Answer:
0