Question:
Solve 17 = -31*p - 107 for p..

Answer:
-4

Question:
Solve 0 = 2*b + 285 - 321 for b..

Answer:
18

Question:
Solve -16 = -3*p - p for p..

Answer:
4

Question:
Solve -27*j = -29*j - 6 for j..

Answer:
-3