question: Teacher asked me this: Solve -6*a = 3 + 15 for a.
++++++++++
answer: -3

question: Teacher asked me this: Solve 75*u - u - 181*u = -2889 for u.
++++++++++
answer: 27

question: Teacher asked me this: Solve -40 + 12 = -14*l for l.
++++++++++
answer: 2

question: Teacher asked me this: Solve -439*c - 61732 = 164*c + 409*c for c.
++++++++++
answer:
-61