Question:
Solve 2425*d - 2041*d + 12439 = 1687 for d..

Answer:
-28

Question:
Solve 7046*q = 6755*q - 36084 for q..

Answer:
-124

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

Answer:
0

Question:
Solve -31*r - 1000 + 358 = 104*r + 2463 for r..

Answer:
-23