Question:
Solve -13461 + 12498 - 12678 = -1397*s + 19887 for s..

Answer:
24

Question:
Solve -48 = 28*i - 20*i for i..

Answer:
-6

Question:
Solve -134*i - 19*i = 446*i + 631*i - 4920 for i..

Answer:
4

Question:
Solve -18471 = -742*i - 8083 for i..

Answer:
14