Q: Solve:
Solve -39*p = 231 + 128 + 109 for p.

A: -12

Q: Solve:
Solve -340*v + 483 - 3543 = 0 for v.

A: -9

Q: Solve:
Solve -146940 = -10449*r + 1067 + 144565 for r.

A:
28