Question:
Solve -446*f + 1180*f = -728*f + 24854 for f..

Answer:
17

Question:
Solve -42*k + 25*k + 21*k - 76 = 0 for k..

Answer:
19

Question:
Solve -10476 = 200*l + 6124 for l..

Answer:
-83

Question:
Solve 79 = 15*y + 4 for y..

Answer:
5