Q: Solve:
Solve -6 = 10*u - 7*u for u.

A: -2

Q: Solve:
Solve 2881*i + 37261 = 4699 - 25058 for i.

A: -20

Q: Solve:
Solve 0 = 13*k - 6*k - 14 for k.

A:
2