Question:
Solve 1 = 5*p - 9 for p..

Answer:
2

Question:
Solve 39*l + 252 = -3*l for l..

Answer:
-6

Question:
Solve 23*i - 58*i = -28*i - 63 for i..

Answer:
9

Question:
Solve -26851 + 23322 = -1006*b + 35220 + 48773 for b..

Answer:
87