question: Teacher asked me this: Solve -4 = -g - 6 for g.
++++++++++
answer: -2

question: Teacher asked me this: Solve -321 = -2*g - 315 for g.
++++++++++
answer: 3

question: Teacher asked me this: Solve 669*w + 9627 - 2937 = 0 for w.
++++++++++
answer: -10

question: Teacher asked me this: Solve 144 = 13*u + 23*u for u.
++++++++++
answer:
4