question: Teacher asked me this: Solve 3*o = 9 - 12 for o.
++++++++++
answer: -1

question: Teacher asked me this: Solve 271*a + 3641 = 9827 + 4925 for a.
++++++++++
answer: 41

question: Teacher asked me this: Solve -11*q + 10 = -1 for q.
++++++++++
answer: 1

question: Teacher asked me this: Solve 50 = 8*r - 18*r for r.
++++++++++
answer:
-5