question: Teacher asked me this: Solve -34*v = 3*v for v.
++++++++++
answer: 0

question: Teacher asked me this: Solve 61 = -3*x - 58*x for x.
++++++++++
answer: -1

question: Teacher asked me this: Solve 112*d + 139 = 139 for d.
++++++++++
answer: 0

question: Teacher asked me this: Solve 128*a = -64*a + 245*a - 1537 for a.
++++++++++
answer:
29