Solve 3153 - 419 = 376*k - 8546 for k.
Solve this plz.

A: 30

Solve -86*o + 19*o = 39*o + 1060 for o.
Solve this plz.

A: -10

Solve -8*f = f - 27 for f.
Solve this plz.

A:
3