question: Teacher asked me this: Solve 65*d = 75*d + 30 for d.
++++++++++
answer: -3

question: Teacher asked me this: Solve 28*z - 129 + 129 = 0 for z.
++++++++++
answer: 0

question: Teacher asked me this: Solve 691*z = -4553 - 24469 for z.
++++++++++
answer: -42

question: Teacher asked me this: Solve -1283*q = 1090*q - 14238 for q.
++++++++++
answer:
6