Q: Solve:
Solve -12*b + 7*b - 3*b = 0 for b.

A: 0

Q: Solve:
Solve u = 7*u + 6 for u.

A: -1

Q: Solve:
Solve 57*t + 55*t = -3922 - 2357 - 5705 for t.

A:
-107