Question:
Solve 25*f - 16*f - 9 = 0 for f..

Answer:
1

Question:
Solve 1031*o - 43829 + 24914 = 48100 for o..

Answer:
65

Question:
Solve 9*x + 11772 = 11700 for x..

Answer:
-8

Question:
Solve -18*f = -22*f - 8 for f..

Answer:
-2