question: Teacher asked me this: Solve 0 = -5*c + 10*c + 20 for c.
++++++++++
answer: -4

question: Teacher asked me this: Solve 0 = -331*s - 117*s + 6272 for s.
++++++++++
answer: 14

question: Teacher asked me this: Solve 196*c - 543 + 7403 = 0 for c.
++++++++++
answer: -35

question: Teacher asked me this: Solve 110*x + 72 = 113*x for x.
++++++++++
answer:
24