Solve -10*v + 4*v - 24 = 0 for v.
Solve this plz.

A: -4

Solve -14468 + 4718 = -250*c for c.
Solve this plz.

A: 39

Solve 5*b - 2171 + 2321 = 0 for b.
Solve this plz.

A:
-30