question: Teacher asked me this: Solve 243*k + 40*k = -54*k + 67*k - 21330 for k.
++++++++++
answer: -79

question: Teacher asked me this: Solve -4 = 10*i + 16 for i.
++++++++++
answer: -2

question: Teacher asked me this: Solve 58 = -59*u - 43*u - 44 for u.
++++++++++
answer: -1

question: Teacher asked me this: Solve -15*k - 83*k = 196 for k.
++++++++++
answer:
-2