Solve 13*b = b - 9*b + 252 for b.
Solve this plz.

A: 12

Solve 360*b + 1642 = -6084 + 2326 for b.
Solve this plz.

A: -15

Solve 14447 - 1009 = -385*m + 1503 for m.
Solve this plz.

A:
-31