Q: Solve:
Solve 0 = 2181*u - 730*u - 54 + 54 for u.

A: 0

Q: Solve:
Solve -1466*l - 10992 - 3386 = 1131 + 3549 for l.

A: -13

Q: Solve:
Solve -2*u + u = 0 for u.

A:
0