Solve 0 = -2378*u + 2449*u - 1562 for u.
Solve this plz.

A: 22

Solve 560 = 52*p + 171*p + 57*p for p.
Solve this plz.

A: 2

Solve 166867 - 182987 = 155*s for s.
Solve this plz.

A:
-104