Question:
Solve 5*q - 28 + 3 = 0 for q..

Answer:
5

Question:
Solve -82*v + 687 - 129 + 508 = 0 for v..

Answer:
13

Question:
Solve 10*b - 412 + 402 = 0 for b..

Answer:
1

Question:
Solve 380*a + 531 = 5851 for a..

Answer:
14