Q: What is the solution?
Solve 12*c - 18*c = -18 for c.

A: 3

Q: What is the solution?
Solve 0 = -64*f + 134*f + 420 for f.

A: -6

Q: What is the solution?
Solve 378*y - 9085 = -5403 - 25606 for y.

A:
-58