question: Teacher asked me this: Solve -288 = 5564*o - 5540*o for o.
++++++++++
answer: -12

question: Teacher asked me this: Solve 815*r + 574 = 856*r for r.
++++++++++
answer: 14

question: Teacher asked me this: Solve 2614 = -8*i + 4749 - 2447 for i.
++++++++++
answer: -39

question: Teacher asked me this: Solve 7*o = 4*o - 3 for o.
++++++++++
answer:
-1