question: Teacher asked me this: Solve -r + 2 = -3 for r.
++++++++++
answer: 5

question: Teacher asked me this: Solve 273*o - 35 = 2649 - 227 for o.
++++++++++
answer: 9

question: Teacher asked me this: Solve 15 = 64*m - 49 for m.
++++++++++
answer: 1

question: Teacher asked me this: Solve 63*s + 32*s - 15 = -1915 for s.
++++++++++
answer:
-20