Q: Solve:
Solve 505*l + 535*l = 917*l - 369 for l.

A: -3

Q: Solve:
Solve -489388 = -46*u - 487594 for u.

A: 39

Q: Solve:
Solve -1944 = 10591*f - 10510*f for f.

A:
-24