question: Teacher asked me this: Solve 0 = 42*m + 4*m - 138 for m.
++++++++++
answer: 3

question: Teacher asked me this: Solve -29*h = -114*h - 1336 - 449 for h.
++++++++++
answer: -21

question: Teacher asked me this: Solve 0 = 85710*s - 86013*s + 12423 for s.
++++++++++
answer: 41

question: Teacher asked me this: Solve -301*n + 424 = -254*n - 892 for n.
++++++++++
answer:
28