Q: What is the solution?
Solve -497 = 67*w + 254 - 81 for w.

A: -10

Q: What is the solution?
Solve 7587*x - 1010409 + 195590 = 18576*x + 9356 for x.

A: -75

Q: What is the solution?
Solve -20*y + 2 = -21*y for y.

A:
-2