Q: What is the solution?
Solve 1004 + 1558 = 131*s - 7221 - 1090 for s.

A: 83

Q: What is the solution?
Solve 7*v - 12*v + 15 = 0 for v.

A: 3

Q: What is the solution?
Solve 1346 + 1704 = -291*a - 2479 for a.

A:
-19