Question:
Solve 116 = -3*i - 30*i - 25*i for i..

Answer:
-2

Question:
Solve 6*n = 10*n + 20 for n..

Answer:
-5

Question:
Solve -10*p = -13*p for p..

Answer:
0

Question:
Solve 46*d - 1335*d + 9072 = 979*d for d..

Answer:
4