question: Teacher asked me this: Solve 15*i - 20 = 20*i for i.
++++++++++
answer: -4

question: Teacher asked me this: Solve 34 + 9496 = 677*v - 5364 for v.
++++++++++
answer: 22

question: Teacher asked me this: Solve 18*u - 42*u = 88*u + 51*u + 163 for u.
++++++++++
answer: -1

question: Teacher asked me this: Solve -165 - 359 - 776 = -50*d for d.
++++++++++
answer:
26