Q: Solve:
Solve -154 = -13*u - 5 + 33 for u.

A: 14

Q: Solve:
Solve -13*c + 8 - 111 = 14 for c.

A: -9

Q: Solve:
Solve 8*x + 71*x + 262*x = 4092 for x.

A:
12