Solve 40217 = 6084*a - 5777*a for a.
Solve this plz.

A: 131

Solve -25*o = -13*o + 20*o for o.
Solve this plz.

A: 0

Solve 18*m - 45*m - 52*m = 711 for m.
Solve this plz.

A:
-9