Question:
Solve 9*o - 12 + 39 = 0 for o..

Answer:
-3

Question:
Solve 153*q - 1946 + 430 - 473 = 0 for q..

Answer:
13

Question:
Solve -1148*b + 1613*b + 3720 = 0 for b..

Answer:
-8

Question:
Solve 0 = -611*v + 908 + 14770 - 2236 for v..

Answer:
22