Solve -17*f - 2729 = -7789 + 2777 + 2572 for f.
Solve this plz.

A: -17

Solve 1601*a - 14 = 1594*a for a.
Solve this plz.

A: 2

Solve 13*k = -32 - 121 - 3 for k.
Solve this plz.

A:
-12