question: Teacher asked me this: Solve 323*f + 9676 - 3411 = -204*f - 14815 for f.
++++++++++
answer: -40

question: Teacher asked me this: Solve -16*o + 311 - 4441 = 279*o for o.
++++++++++
answer: -14

question: Teacher asked me this: Solve 0 = 36*a - 39*a - 15 for a.
++++++++++
answer: -5

question: Teacher asked me this: Solve 1500*k - 100021 = 51479 for k.
++++++++++
answer:
101