question: Teacher asked me this: Solve -39*d + 54 = -45 - 18 for d.
++++++++++
answer: 3

question: Teacher asked me this: Solve -338*l - 112*l + 40754 = 26*l + 21*l for l.
++++++++++
answer: 82

question: Teacher asked me this: Solve -8 = -2*k + 4*k for k.
++++++++++
answer: -4

question: Teacher asked me this: Solve 0 = -90*a + 89*a - 3 for a.
++++++++++
answer:
-3