Solve 0 = 187*r - 277*r - 1620 for r.
Solve this plz.

A: -18

Solve 0 = -104*v + 111*v + 56 for v.
Solve this plz.

A: -8

Solve 100*p = -2114 + 1114 for p.
Solve this plz.

A:
-10