Q: What is the solution?
Solve 0 = -11*r + 14*r + 3 for r.

A: -1

Q: What is the solution?
Solve 1470*d + 50774 = 512*d for d.

A: -53

Q: What is the solution?
Solve 63904*o - 10584 = 63688*o for o.

A:
49