question: Teacher asked me this: Solve 2*z - 24 = 10*z for z.
++++++++++
answer: -3

question: Teacher asked me this: Solve 207*u - 13 = 171*u + 23 for u.
++++++++++
answer: 1

question: Teacher asked me this: Solve -7*j = -9*j - 8 for j.
++++++++++
answer: -4

question: Teacher asked me this: Solve x = 35 - 40 for x.
++++++++++
answer:
-5