question: Teacher asked me this: Solve -530*z - 1923*z + 5050 - 6173 = -30559 for z.
++++++++++
answer: 12

question: Teacher asked me this: Solve 0 = 664*u - 667*u for u.
++++++++++
answer: 0

question: Teacher asked me this: Solve 2394*a - 1913 = 1009*a + 122737 for a.
++++++++++
answer: 90

question: Teacher asked me this: Solve 5*k = -141 + 136 for k.
++++++++++
answer:
-1