Solve 84*b + 2309 = 343*b - 1058 for b.
Solve this plz.

A: 13

Solve -6734*o + 13604*o + 24750 = 6672*o for o.
Solve this plz.

A: -125

Solve 2*l - 105 = -28*l + 45 for l.
Solve this plz.

A:
5