Question:
Solve 0 = 217*f + 912 + 173 for f..

Answer:
-5

Question:
Solve -15*s - 30 = -0 for s..

Answer:
-2

Question:
Solve 3954*s + 252184 = 7036 for s..

Answer:
-62

Question:
Solve -2*m + 2 = -0*m for m..

Answer:
1