question: Teacher asked me this: Solve -1166*z + 15581 = -34062 + 4169 for z.
++++++++++
answer: 39

question: Teacher asked me this: Solve -2*x = -3337 + 3339 for x.
++++++++++
answer: -1

question: Teacher asked me this: Solve -25*f + 56 = -18*f for f.
++++++++++
answer: 8

question: Teacher asked me this: Solve 55 - 73 = -9*r for r.
++++++++++
answer:
2