question: Teacher asked me this: Solve 8670 = -379*o + 90*o for o.
++++++++++
answer: -30

question: Teacher asked me this: Solve -8224*s + 189 = -8251*s for s.
++++++++++
answer: -7

question: Teacher asked me this: Solve -829*k + 17722 + 23448 = 314*k - 63986 for k.
++++++++++
answer: 92

question: Teacher asked me this: Solve -859*o - 1204*o = -44*o - 8076 for o.
++++++++++
answer:
4