Q: What is the solution?
Solve 64*k = 51*k - 130 for k.

A: -10

Q: What is the solution?
Solve -21*g - 109 = -118*g - 12 for g.

A: 1

Q: What is the solution?
Solve 0*u = 4*u - 12 for u.

A:
3