question: Teacher asked me this: Solve 13*x - x = -5*x for x.
++++++++++
answer: 0

question: Teacher asked me this: Solve -20 = -39*y + 29*y for y.
++++++++++
answer: 2

question: Teacher asked me this: Solve 4825 - 759 = 107*s for s.
++++++++++
answer: 38

question: Teacher asked me this: Solve 220*c - 2295*c = -36*c - 12234 for c.
++++++++++
answer:
6