Question:
Solve 91*b + 13 = 650 for b..

Answer:
7

Question:
Solve -82*u = -103*u - 126 for u..

Answer:
-6

Question:
Solve -27928*s - 570459 - 892215 = -3241*s - 277698 for s..

Answer:
-48

Question:
Solve 1392*o - 37145 - 18978 + 11579 = 0 for o..

Answer:
32