question: Teacher asked me this: Solve -309 - 548 = -1177*o + 496 - 176 for o.
++++++++++
answer: 1

question: Teacher asked me this: Solve -137*u + 924 + 6953 = 49*u - 493 for u.
++++++++++
answer: 45

question: Teacher asked me this: Solve 21*c = -3*c - 72 for c.
++++++++++
answer: -3

question: Teacher asked me this: Solve 272*u - 274*u = -8 for u.
++++++++++
answer:
4