Solve 0 = 3*z - 4*z for z.
Solve this plz.

A: 0

Solve 0 = 8*c + 1 + 39 for c.
Solve this plz.

A: -5

Solve 46*a - 12 = -39 - 19 for a.
Solve this plz.

A:
-1