Question:
Solve 4*i = 20157 - 20221 for i..

Answer:
-16

Question:
Solve -525 = 59*y + 773 for y..

Answer:
-22

Question:
Solve 0 = 187*y - 190*y for y..

Answer:
0

Question:
Solve 2184 = 31*n - 187*n for n..

Answer:
-14