question: Teacher asked me this: Solve 66 = -29*z - 21 for z.
++++++++++
answer: -3

question: Teacher asked me this: Solve -51 = 37*c - 236 for c.
++++++++++
answer: 5

question: Teacher asked me this: Solve -1634*u + 4080 - 17152 = 0 for u.
++++++++++
answer: -8

question: Teacher asked me this: Solve -51*z - 3519 = 24*z + 78*z for z.
++++++++++
answer:
-23