question: Teacher asked me this: Solve 3*c - 7*c + 12 = 0 for c.
++++++++++
answer: 3

question: Teacher asked me this: Solve 472*r - 6008 = 5683 - 1779 for r.
++++++++++
answer: 21

question: Teacher asked me this: Solve -226464 = 521181*o - 518822*o for o.
++++++++++
answer: -96

question: Teacher asked me this: Solve -3172100*y + 8398 = -3171853*y for y.
++++++++++
answer:
34