Q: Solve 5*n = -n - 6 for n.

A: -1

Q: Solve -17740*r + 67305 = -19663*r for r.

A: -35

Q: Solve 208*z = 229*z + 21 for z.

A: -1

Q: Solve 387*u = 395*u + 32 for u.

A:
-4