Solve 3208*f = 3246*f + 1140 for f.
Solve this plz.

A: -30

Solve 0 = -1901*i + 1811*i - 2070 for i.
Solve this plz.

A: -23

Solve -11239 = -1663*l - 754*l - 25870 - 38543 for l.
Solve this plz.

A:
-22