question: Teacher asked me this: Solve -199670 = -639*q - 275*q + 1567*q + 1782*q for q.
++++++++++
answer: -82

question: Teacher asked me this: Solve 13*n + 168 = -8*n for n.
++++++++++
answer: -8

question: Teacher asked me this: Solve -74*s = -57*s + 17 for s.
++++++++++
answer: -1

question: Teacher asked me this: Solve 49*s - 52*s + 663 = 36*s for s.
++++++++++
answer:
17