Q: What is the solution?
Solve 26 = -19*f + 159 for f.

A: 7

Q: What is the solution?
Solve 0 = 589*x - 587*x + 11 + 19 for x.

A: -15

Q: What is the solution?
Solve 689*z - 241*z = -22848 for z.

A:
-51