Question: What is the solution?

Solve -576*f = 13649 - 2705 for f.

Answer: -19

Question: What is the solution?

Solve 525*i = 510*i - 135 for i.

Answer: -9

Question: What is the solution?

Solve 2*l - 2716 = -2798 for l.

Answer: -41

Question: What is the solution?

Solve -697 + 4807 = 411*u for u.

Answer:
10