Question:
Solve 0 = -786*v + 765*v + 231 for v..

Answer:
11

Question:
Solve -486*b + 17052 = 470*b - 368*b for b..

Answer:
29

Question:
Solve -113*i + 7703 = 4539 for i..

Answer:
28

Question:
Solve -107 = 3*i - 113 for i..

Answer:
2