question: Teacher asked me this: Solve 0 = 2*j - 9*j - 7 for j.
++++++++++
answer: -1

question: Teacher asked me this: Solve 817*c = 117*c for c.
++++++++++
answer: 0

question: Teacher asked me this: Solve 4297 - 4347 = 10*t for t.
++++++++++
answer: -5

question: Teacher asked me this: Solve 10*x = 83*x - 292 for x.
++++++++++
answer:
4