question: Teacher asked me this: Solve 47 = 47*u - 94 for u.
++++++++++
answer: 3

question: Teacher asked me this: Solve 9*g - 12 + 39 = 0 for g.
++++++++++
answer: -3

question: Teacher asked me this: Solve 568*f = -1951 + 13879 for f.
++++++++++
answer: 21

question: Teacher asked me this: Solve n - 5 = -4*n for n.
++++++++++
answer:
1