question: Teacher asked me this: Solve 11*z = 13*z + 8 for z.
++++++++++
answer: -4

question: Teacher asked me this: Solve -66*v = 134*v - 220*v - 660 for v.
++++++++++
answer: -33

question: Teacher asked me this: Solve 18*o = 12*o for o.
++++++++++
answer: 0

question: Teacher asked me this: Solve -40*s = -27*s - 48*s - 35 for s.
++++++++++
answer:
-1