Q: What is the solution?
Solve 2*t = 1 - 9 for t.

A: -4

Q: What is the solution?
Solve 20409 - 20414 = -z for z.

A: 5

Q: What is the solution?
Solve 1433 = 8449*o - 130790 - 111171 + 6822 for o.

A:
28