Q: Solve:
Solve k + 55 - 52 = 0 for k.

A: -3

Q: Solve:
Solve 596*f = 2751*f + 3422*f + 209941 + 386798 for f.

A: -107

Q: Solve:
Solve 7 = 177*r - 170*r for r.

A:
1