Q: Solve:
Solve -6*f + 2 + 17 = -59 for f.

A: 13

Q: Solve:
Solve 219*u = 41*u - 12*u - 5130 for u.

A: -27

Q: Solve:
Solve 0 = -6*z + z - 20 for z.

A:
-4