Solve -1464 + 1420 = 22*n for n.
Solve this plz.

A: -2

Solve 13*a - 106*a = 186 for a.
Solve this plz.

A: -2

Solve -90*f - 32*f - 1071 = -705 for f.
Solve this plz.

A:
-3