Question:
Solve -122*f + 6643 = 12*f + 223 - 2960 for f..

Answer:
70

Question:
Solve 0 = -9*d - 33 - 21 for d..

Answer:
-6

Question:
Solve 0 = 12*h - 9*h - 12 for h..

Answer:
4

Question:
Solve 40*o + 10*o + 32*o - 3562 = -282 for o..

Answer:
40