Question:
Solve 9*j = 5*j + 12 for j..

Answer:
3

Question:
Solve 0 = -571*f + 242 + 594 + 552 - 246 for f..

Answer:
2

Question:
Solve -253*t + 4474 = 1185 for t..

Answer:
13

Question:
Solve -1036 = -250*b + 287*b for b..

Answer:
-28