Q: Solve 3306 - 2139 - 13655 = 308*u + 2912 for u.

A: -50

Q: Solve 725*w - 254 = 687*w + 50 for w.

A: 8

Q: Solve 8*l + 471 - 447 = 0 for l.

A: -3

Q: Solve 55*c + 12*c = 355 + 181 for c.

A:
8