question: Teacher asked me this: Solve 186926*k + 6283 = 186469*k - 3314 for k.
++++++++++
answer: -21

question: Teacher asked me this: Solve -817*o + 1214 = -210*o for o.
++++++++++
answer: 2

question: Teacher asked me this: Solve 25*k - 3781 = -3506 for k.
++++++++++
answer: 11

question: Teacher asked me this: Solve 1491*s - 1619*s = -2688 for s.
++++++++++
answer:
21