Question:
Solve 0 = -663*p + 666*p - 15 for p..

Answer:
5

Question:
Solve 27*d + 361*d + 3492 = 0 for d..

Answer:
-9

Question:
Solve -10*c - 437 = 11*c - 2*c for c..

Answer:
-23

Question:
Solve 140*a - 1314648 + 1324728 = 0 for a..

Answer:
-72