question: Teacher asked me this: Solve -75 = 11*i - 75 for i.
++++++++++
answer: 0

question: Teacher asked me this: Solve -7*u + 97008 = 97015 for u.
++++++++++
answer: -1

question: Teacher asked me this: Solve -6*z - 33 = -9 for z.
++++++++++
answer: -4

question: Teacher asked me this: Solve -171*a = -36*a + 244 - 872 - 587 for a.
++++++++++
answer:
9