question: Teacher asked me this: Solve -1811 - 811 = 215*z + 3183 for z.
++++++++++
answer: -27

question: Teacher asked me this: Solve 774*f = 220*f + 17284 - 6204 for f.
++++++++++
answer: 20

question: Teacher asked me this: Solve 89*n + 98*n = 2244 for n.
++++++++++
answer: 12

question: Teacher asked me this: Solve -1252*u = -1246*u + 12 for u.
++++++++++
answer:
-2