question: Teacher asked me this: Solve 2*d + 10*d = 3*d for d.
++++++++++
answer: 0

question: Teacher asked me this: Solve 13*n + 1002 - 1288 = 0 for n.
++++++++++
answer: 22

question: Teacher asked me this: Solve 67 = 9*k + 289 - 78 for k.
++++++++++
answer: -16

question: Teacher asked me this: Solve -8323*w = -8395*w - 72 for w.
++++++++++
answer:
-1