Q: What is the solution?
Solve -351*o = 930*o + 449*o - 27680 for o.

A: 16

Q: What is the solution?
Solve -111*u + 50*u - 81*u = 2130 for u.

A: -15

Q: What is the solution?
Solve 2185885*x = 2185993*x + 5940 for x.

A:
-55