question: Teacher asked me this: Solve 12209*j = 12480*j - 4607 for j.
++++++++++
answer: 17

question: Teacher asked me this: Solve -1440*b + 1127 = -1601*b for b.
++++++++++
answer: -7

question: Teacher asked me this: Solve -a - a + 3*a = 0 for a.
++++++++++
answer: 0

question: Teacher asked me this: Solve 0 = -17*d - 121 - 32 for d.
++++++++++
answer:
-9