Q: Solve:
Solve 0 = 65*k + 124*k - 2457 for k.

A: 13

Q: Solve:
Solve 0 = 91*g + 177*g - 21*g + 247 for g.

A: -1

Q: Solve:
Solve -42*s - 18 = -33*s for s.

A:
-2