Solve 1848 = -85*o + 234*o + 209 for o.
Solve this plz.

A: 11

Solve 383*l + 1466 + 156 = 260*l - 346 for l.
Solve this plz.

A: -16

Solve -865*r - 1924 = -1212 + 1883 for r.
Solve this plz.

A:
-3