Q: Solve:
Solve 6*q = 58*q + 21*q + 73 for q.

A: -1

Q: Solve:
Solve 27*r = 64 + 71 for r.

A: 5

Q: Solve:
Solve -5774*i + 1659999 = -3568*i + 11513*i for i.

A:
121