Question:
Solve 0 = -2386*f + 2556*f + 5270 for f..

Answer:
-31

Question:
Solve 9*y + 21 = -15 for y..

Answer:
-4

Question:
Solve 53*o = o - 260 for o..

Answer:
-5

Question:
Solve 25*a - 340 = 11*a - 29*a - 1931 for a..

Answer:
-37