question: Teacher asked me this: Solve u = -655 + 651 for u.
++++++++++
answer: -4

question: Teacher asked me this: Solve 1009*d = 1011*d + 14 for d.
++++++++++
answer: -7

question: Teacher asked me this: Solve -31657 + 44579 = -182*d for d.
++++++++++
answer: -71

question: Teacher asked me this: Solve 2139 = 232*b - 2037 for b.
++++++++++
answer:
18