Solve 9856 = -13*w + 9661 for w.
Solve this plz.

A: -15

Solve 451*u + 723*u + 61215 = -890*u + 315*u for u.
Solve this plz.

A: -35

Solve -20*d + 60*d = 20*d + 27*d for d.
Solve this plz.

A:
0