Question:
Solve -5*n = -7*n - 3*n for n..

Answer:
0

Question:
Solve 144 = 48190*o - 48273*o - 188 - 83 for o..

Answer:
-5

Question:
Solve -3634*i + 264*i = -74140 for i..

Answer:
22

Question:
Solve -8*x + 11 = -21 for x..

Answer:
4