question: Teacher asked me this: Solve -1428 = 198*k - 181*k - 85*k for k.
++++++++++
answer: 21

question: Teacher asked me this: Solve 5*y = 47 - 17 for y.
++++++++++
answer: 6

question: Teacher asked me this: Solve -d - 9 = -4*d for d.
++++++++++
answer: 3

question: Teacher asked me this: Solve 122*u - 905 = -76 - 4733 for u.
++++++++++
answer:
-32