question: Teacher asked me this: Solve -40*c + 6 = -39*c for c.
++++++++++
answer: 6

question: Teacher asked me this: Solve 0 = 56*w - 18*w for w.
++++++++++
answer: 0

question: Teacher asked me this: Solve -93*k = 275*k + 2576 for k.
++++++++++
answer: -7

question: Teacher asked me this: Solve 3*a = -4*a + 28 for a.
++++++++++
answer:
4