Question:
Solve -76*p + 212 = 30*p for p..

Answer:
2

Question:
Solve 181 = 125*n + 56 for n..

Answer:
1

Question:
Solve -8 = 108*d - 100*d for d..

Answer:
-1

Question:
Solve -18 = -71*k + 77*k for k..

Answer:
-3