Solve 3646 = -525*u - 23186 - 4668 for u.
Solve this plz.

A: -60

Solve -214*x + 143*x - 49679 = 1288*x - 161117 for x.
Solve this plz.

A: 82

Solve 125*s + 8627 = -162*s - 211*s + 2651 for s.
Solve this plz.

A:
-12