question: Teacher asked me this: Solve -14 = 7*r - 0 for r.
++++++++++
answer: -2

question: Teacher asked me this: Solve -1230*o + 31*o + 10446 = -21927 for o.
++++++++++
answer: 27

question: Teacher asked me this: Solve 1479*n = -40624 - 92486 for n.
++++++++++
answer: -90

question: Teacher asked me this: Solve 216*s - 2190 = 289*s for s.
++++++++++
answer:
-30