Solve -606*r - 4616 - 2039 = -r for r.
Solve this plz.

A: -11

Solve 3 = -14*f + 17 for f.
Solve this plz.

A: 1

Solve 0 = -420199*i + 420227*i - 1176 for i.
Solve this plz.

A:
42