question: Teacher asked me this: Solve 139*i - 2301 - 383 = 810*i for i.
++++++++++
answer: -4

question: Teacher asked me this: Solve 583*v + 4714 - 1920 = -3036 for v.
++++++++++
answer: -10

question: Teacher asked me this: Solve 0 = 239*x - 450*x + 33*x - 5696 for x.
++++++++++
answer: -32

question: Teacher asked me this: Solve -31 - 1140 = -109*o - 9019 for o.
++++++++++
answer:
-72