Solve 398*z = 729*z - 1324 for z.
Solve this plz.

A: 4

Solve 0 = -49*u - 3 - 35 + 72 + 1387 for u.
Solve this plz.

A: 29

Solve 3*l - 13*l + 20 = 0 for l.
Solve this plz.

A:
2