question: Teacher asked me this: Solve -444 = 206*x - 280*x for x.
++++++++++
answer: 6

question: Teacher asked me this: Solve 0 = 10*z - 7*z - 15 for z.
++++++++++
answer: 5

question: Teacher asked me this: Solve -683*u + 39952 - 46099 = 0 for u.
++++++++++
answer: -9

question: Teacher asked me this: Solve -62*f + 785 = -331 for f.
++++++++++
answer:
18