Solve -3380*w = -2948*w + 5184 for w.
Solve this plz.

A: -12

Solve 48 = -276*z + 260*z for z.
Solve this plz.

A: -3

Solve 135*b + 8389 = 879*b - 46667 for b.
Solve this plz.

A:
74