Q: What is the solution?
Solve -20*k + 39 - 45 = 114 for k.

A: -6

Q: What is the solution?
Solve 369 - 455 = 67*o + 651 for o.

A: -11

Q: What is the solution?
Solve 4*w = -5*w - 36 for w.

A:
-4