Solve 3550 - 2039 = 300*k + 12611 for k.
Solve this plz.

A: -37

Solve 768*j + 260*j + 1223012 = -8835*j for j.
Solve this plz.

A: -124

Solve 67*b + 2426 = 818 for b.
Solve this plz.

A:
-24