Q: What is the solution?
Solve 11878*u = 11871*u - 882 for u.

A: -126

Q: What is the solution?
Solve -2076*k + 140 = -2066*k for k.

A: 14

Q: What is the solution?
Solve -24*d + 10 = -19*d for d.

A:
2