Q: Solve -68 = 139*l - 105*l for l.

A: -2

Q: Solve 9*s + 308 = -35*s for s.

A: -7

Q: Solve 0 = -1862*k + 1510*k - 9504 for k.

A: -27

Q: Solve 0 = -31*v + 2043 - 400 for v.

A:
53