Q: Solve 74*x - 47 = -47 for x.

A: 0

Q: Solve 7*f = 177 + 184 - 389 for f.

A: -4

Q: Solve 406*i = 372*i + 68 for i.

A: 2

Q: Solve 474*l + 1145*l - 29142 = 0 for l.

A:
18