question: Teacher asked me this: Solve 7*r + 417 - 431 = 0 for r.
++++++++++
answer: 2

question: Teacher asked me this: Solve -6304 - 456 = -7233*u + 7103*u for u.
++++++++++
answer: 52

question: Teacher asked me this: Solve -4315*q + 4215*q = 2300 for q.
++++++++++
answer: -23

question: Teacher asked me this: Solve -7*i + 0*i = -35 for i.
++++++++++
answer:
5