Question:
Solve -3890 = -12*p - 3866 for p..

Answer:
2

Question:
Solve -765308*d = -765267*d - 779 for d..

Answer:
19

Question:
Solve 3*i + 424 = 56*i for i..

Answer:
8

Question:
Solve 392 = -69*j + 13*j for j..

Answer:
-7