Solve 0 = -157*v + 201 + 898 for v.
Solve this plz.

A: 7

Solve -408*k + 7144 - 616 = 0 for k.
Solve this plz.

A: 16

Solve 180 = -146*r + 126*r for r.
Solve this plz.

A:
-9