Solve 0 = 12*v - 518 + 578 for v.
Solve this plz.

A: -5

Solve 27*t + 486067 - 485905 = 0 for t.
Solve this plz.

A: -6

Solve -151646 = -3835*r + 109001 - 49722 for r.
Solve this plz.

A:
55