Solve 0 = 2*a + 150 - 166 for a.
Solve this plz.

A: 8

Solve 283*z = -625*z - 7793 - 3103 for z.
Solve this plz.

A: -12

Solve -25*b + 45 = -34*b for b.
Solve this plz.

A:
-5