Solve -35*f + 2 = -34*f for f.
Solve this plz.

A: 2

Solve 287*d - 1161 = -298*d + 628*d for d.
Solve this plz.

A: -27

Solve 567*u + 619*u = 1861*u - 568*u + 2889 for u.
Solve this plz.

A:
-27