question: Teacher asked me this: Solve 0 = 10*c - 2*c - 40 for c.
++++++++++
answer: 5

question: Teacher asked me this: Solve 18*j + 2*j - 1539 = -1499 for j.
++++++++++
answer: 2

question: Teacher asked me this: Solve 509 = 256*b + 1533 for b.
++++++++++
answer: -4

question: Teacher asked me this: Solve 106*i - 10*i + 113 = -17*i for i.
++++++++++
answer:
-1