Solve 15 = 26*d + 15 for d.
Solve this plz.

A: 0

Solve -9274*r + 9257*r - 51 = 0 for r.
Solve this plz.

A: -3

Solve -68 + 181 = 281*w - 168 for w.
Solve this plz.

A:
1