question: Teacher asked me this: Solve -9*l + 54*l = 0 for l.
++++++++++
answer: 0

question: Teacher asked me this: Solve 63*z = 10*z - 128*z + 1268 - 5250 for z.
++++++++++
answer: -22

question: Teacher asked me this: Solve -1016*v - 1263*v = 1474*v - 137272 - 9095 for v.
++++++++++
answer: 39

question: Teacher asked me this: Solve 707 = 77*f - 2989 for f.
++++++++++
answer:
48