Question:
Solve -8*n - 50 = -10 for n..

Answer:
-5

Question:
Solve 156*o = 396*o - 6240 for o..

Answer:
26

Question:
Solve -20*l = -57*l - 111 for l..

Answer:
-3

Question:
Solve -5520 = 406813*p - 406629*p for p..

Answer:
-30