Q: What is the solution?
Solve 0 = 5*v - 14*v + 16*v + 21 for v.

A: -3

Q: What is the solution?
Solve 1636 = 12*h - 472*h + 14056 for h.

A: 27

Q: What is the solution?
Solve -1719*l - 20437 = 3629 for l.

A:
-14