Q: Solve:
Solve 125*z + 1991 = -794*z + 153 for z.

A: -2

Q: Solve:
Solve 70*v - 109*v - 333*v = -6696 for v.

A: 18

Q: Solve:
Solve -1305 - 1043 = -159*o - 856 + 257 for o.

A:
11