Q: Solve:
Solve 0 = -1607*u + 1616*u + 36 for u.

A: -4

Q: Solve:
Solve 0 = 1972*r + 1841*r - 45316 + 8922 - 55118 for r.

A: 24

Q: Solve:
Solve 3*i - 5 - 7 = 0 for i.

A:
4