Question:
Solve 589 = -3303*d + 3272*d for d..

Answer:
-19

Question:
Solve 44*f + 1820 = -47*f for f..

Answer:
-20

Question:
Solve 618 + 150 = 483*m - 198 for m..

Answer:
2

Question:
Solve 722*q - 56*q = -11988 for q..

Answer:
-18