question: Teacher asked me this: Solve 1875*n + 168 = 1881*n for n.
++++++++++
answer: 28

question: Teacher asked me this: Solve 2*p + 13 - 11 = 0 for p.
++++++++++
answer: -1

question: Teacher asked me this: Solve 254*s - 51*s = 3248 for s.
++++++++++
answer: 16

question: Teacher asked me this: Solve -51*r + 181 = -533 for r.
++++++++++
answer:
14