question: Teacher asked me this: Solve 0 = -6*y + 3*y + 6 for y.
++++++++++
answer: 2

question: Teacher asked me this: Solve -113 = 291*f - 330*f + 316 for f.
++++++++++
answer: 11

question: Teacher asked me this: Solve 0 = -339*a + 185 + 144 + 2044 for a.
++++++++++
answer: 7

question: Teacher asked me this: Solve -30*z = 678 - 318 for z.
++++++++++
answer:
-12