Question:
Solve 0 = -663*m + 708*m - 1623 - 357 for m..

Answer:
44

Question:
Solve -35640 = -161*f - 420*f - 904*f for f..

Answer:
24

Question:
Solve -x - 9 = -12 for x..

Answer:
3

Question:
Solve -427*k + 1526 + 1547 + 3759 = 0 for k..

Answer:
16