question: Teacher asked me this: Solve 72*x = 173*x + 61*x + 6804 for x.
++++++++++
answer: -42

question: Teacher asked me this: Solve 137*i = 887*i + 57000 for i.
++++++++++
answer: -76

question: Teacher asked me this: Solve -7584 + 284 = -730*c for c.
++++++++++
answer: 10

question: Teacher asked me this: Solve -817*d + 21457 - 684 = -27*d - 557 for d.
++++++++++
answer:
27