Q: Solve:
Solve 0 = 6*o - 8 - 1 - 21 for o.

A: 5

Q: Solve:
Solve -20*g - 209 + 229 = 0 for g.

A: 1

Q: Solve:
Solve 406*i = 372*i + 68 for i.

A:
2