Q: Solve 0 = 1128*u - 397*u - 15455 - 13054 for u.

A: 39

Q: Solve 231*x + 305*x - 6675 - 1929 - 11764 = 0 for x.

A: 38

Q: Solve 22112 = 312*z + 322*z - 22268 for z.

A: 70

Q: Solve -12*l = 7*l - 133 for l.

A:
7