Question:
Solve 289*b - 861571 = -874287 for b..

Answer:
-44

Question:
Solve 586*n = -928*n - 349*n + 74520 for n..

Answer:
40

Question:
Solve 0 = 5831*r + 266983 - 39574 for r..

Answer:
-39

Question:
Solve 4201*c + 155818 = -54232 for c..

Answer:
-50