question: Teacher asked me this: Solve 0 = 90*o - 1068 - 451 - 1271 for o.
++++++++++
answer: 31

question: Teacher asked me this: Solve 111*u + 714 = 145*u for u.
++++++++++
answer: 21

question: Teacher asked me this: Solve 1371 - 1434 = 9*x for x.
++++++++++
answer: -7

question: Teacher asked me this: Solve 708 = 814*x - 802*x for x.
++++++++++
answer:
59