question: Teacher asked me this: Solve 0 = -2*x + 5*x + 6*x - 9 for x.
++++++++++
answer: 1

question: Teacher asked me this: Solve 0 = -4*o + 8 - 12 for o.
++++++++++
answer: -1

question: Teacher asked me this: Solve 0 = 91606*w - 91810*w - 15096 for w.
++++++++++
answer: -74

question: Teacher asked me this: Solve 0 = -18*y - 42*y + 6*y - 216 for y.
++++++++++
answer:
-4