Q: Solve:
Solve 405807*t - 405861*t - 2517 = -519 for t.

A: -37

Q: Solve:
Solve 31*a - 420*a - 31129 = -1565 for a.

A: -76

Q: Solve:
Solve 0 = -9*x - 10 - 8 for x.

A:
-2