question: Teacher asked me this: Solve -63*i = -81*i + 43*i - 125 for i.
++++++++++
answer: 5

question: Teacher asked me this: Solve 60*x + 2055 = 268*x + 807 for x.
++++++++++
answer: 6

question: Teacher asked me this: Solve -49052 + 381856 = -11476*o for o.
++++++++++
answer: -29

question: Teacher asked me this: Solve -2*k = -0*k + 2*k for k.
++++++++++
answer:
0