question: Teacher asked me this: Solve 0 = 4*r + r - 25 for r.
++++++++++
answer: 5

question: Teacher asked me this: Solve 5*s - 9*s = 12 for s.
++++++++++
answer: -3

question: Teacher asked me this: Solve 0 = -1328*s + 852*s + 9044 for s.
++++++++++
answer: 19

question: Teacher asked me this: Solve -327*r - 541*r - 1897*r - 29148 = 42742 for r.
++++++++++
answer:
-26