Q: Solve:
Solve 0 = -868*l + 1704 - 10384 for l.

A: -10

Q: Solve:
Solve 0 = -5*a + 3*a - 11*a for a.

A: 0

Q: Solve:
Solve -104*u = -97*u - 42 for u.

A:
6