Solve -3286*f = -356*f + 896*f - 53564 for f.
Solve this plz.

A: 14

Solve -15*d + 73 + 164 - 57 = 0 for d.
Solve this plz.

A: 12

Solve 1601*m - 270*m + 2143 = -812*m for m.
Solve this plz.

A:
-1