Solve 9 - 69 = 24*k - 18*k for k.
Solve this plz.

A: -10

Solve -53*b - 102*b + 1240 = 0 for b.
Solve this plz.

A: 8

Solve 0 = 126*b + 1202 + 1318 for b.
Solve this plz.

A:
-20