Solve 424*d + 350 = 399*d for d.
Solve this plz.

A: -14

Solve 435*r - 442*r = 2187*r - 85566 for r.
Solve this plz.

A: 39

Solve 45*q - 865 = -9*q + 735 + 1208 for q.
Solve this plz.

A:
52