Question:
Solve 626*y - 611*y + 45 = 0 for y..

Answer:
-3

Question:
Solve 183*t = -714 + 1995 for t..

Answer:
7

Question:
Solve 1517 - 926 = -126*f - 1803 for f..

Answer:
-19

Question:
Solve 2*n + 139 = 151 for n..

Answer:
6