question: Teacher asked me this: Solve -23 = -3*u - 5 for u.
++++++++++
answer: 6

question: Teacher asked me this: Solve -362*a - 1269 + 504 = 321 for a.
++++++++++
answer: -3

question: Teacher asked me this: Solve 27 = -145*w - 843 for w.
++++++++++
answer: -6

question: Teacher asked me this: Solve 22 + 107 = -43*k for k.
++++++++++
answer:
-3