question: Teacher asked me this: Solve 36 - 339 - 21 = 18*w for w.
++++++++++
answer: -18

question: Teacher asked me this: Solve 0 = r + 19 - 23 for r.
++++++++++
answer: 4

question: Teacher asked me this: Solve -3850*t = -3846*t for t.
++++++++++
answer: 0

question: Teacher asked me this: Solve 43*g + 192 - 450 = 0 for g.
++++++++++
answer:
6