Q: Solve:
Solve 0 = 212*o - 1124 + 8815 + 1425 for o.

A: -43

Q: Solve:
Solve 1 = -5*c + 6 for c.

A: 1

Q: Solve:
Solve -10253*a - 481 = -10266*a for a.

A:
37