Q: What is the solution?
Solve 0 = -524*z + 1047*z - 13589 - 20406 for z.

A: 65

Q: What is the solution?
Solve 131*o - 287 = 30*o - 1095 for o.

A: -8

Q: What is the solution?
Solve -419*x = -25*x + 1576 for x.

A:
-4