question: Teacher asked me this: Solve 475*w = -36*w - 9543 + 25895 for w.
++++++++++
answer: 32

question: Teacher asked me this: Solve -28 = 10*s + 2 for s.
++++++++++
answer: -3

question: Teacher asked me this: Solve 24091*u = 24077*u - 210 for u.
++++++++++
answer: -15

question: Teacher asked me this: Solve -29 = 490*d - 1499 for d.
++++++++++
answer:
3