Question: What is the solution?

Solve -2040 + 773 - 1412 = 141*b for b.

Answer: -19

Question: What is the solution?

Solve 4066*s + 14784*s + 1319500 = 0 for s.

Answer: -70

Question: What is the solution?

Solve -31 = 9*a - 4 for a.

Answer: -3

Question: What is the solution?

Solve -30*l = 17*l + 2028 - 2592 for l.

Answer:
12