question: Teacher asked me this: Solve -419*f + 8602 = -28*f for f.
++++++++++
answer: 22

question: Teacher asked me this: Solve 0*l = -34*l - 9*l - 43 for l.
++++++++++
answer: -1

question: Teacher asked me this: Solve 1170 = 421192*p - 421257*p for p.
++++++++++
answer: -18

question: Teacher asked me this: Solve 428*y + 168 = 449*y for y.
++++++++++
answer:
8