question: Teacher asked me this: Solve 150975 - 406719 = -3552*c for c.
++++++++++
answer: 72

question: Teacher asked me this: Solve -1689*v = -1704*v - 345 for v.
++++++++++
answer: -23

question: Teacher asked me this: Solve -1005*w + 998*w - 63 = 0 for w.
++++++++++
answer: -9

question: Teacher asked me this: Solve -43*w - 15*w - 1422 = 21*w for w.
++++++++++
answer:
-18