Question:
Solve -9*f = -9 - 0 for f..

Answer:
1

Question:
Solve 36 = 10*q - q for q..

Answer:
4

Question:
Solve 158*l + 1862 - 508 + 542 = 0 for l..

Answer:
-12

Question:
Solve 2647*q - 1083*q + 1231*q + 19523 + 131407 = 0 for q..

Answer:
-54