Question:
Solve 441*p + 159*p + 24751 = 129*p - 9161 for p..

Answer:
-72

Question:
Solve 139*d - 2341 - 491 = -747 for d..

Answer:
15

Question:
Solve 49*k + 30*k = -79 for k..

Answer:
-1

Question:
Solve 16*n - 1 = 17*n for n..

Answer:
-1