Solve -2012 - 424 + 9681 = 191*f - 4788 for f.
Solve this plz.

A: 63


Solve 1027*u = 1025*u - 12 for u.
Solve this plz.

A: -6


Solve 3530*f - 3333*f + 5276 - 821 = -2243 for f.
Solve this plz.

A:
-34